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Bolt

Bolt is an multinational specializing in and services, including ride-hailing, electric scooter and car-sharing rentals, food and grocery , and solutions. Founded in 2013 by in , , as Taxify—a ride-hailing initially focused on challenging traditional services—the company started with a modest €5,000 family loan to develop its prototype app. In March 2019, it rebranded to Bolt to encompass its growing portfolio of options beyond cars, such as e-scooters and , aligning with its mission to make cities more livable by prioritizing people over vehicles. As of 2025, Bolt operates in over 50 countries across Europe, Africa, Western Asia, Southeast Asia, and Latin America, serving more than 200 million registered customers through its super-app ecosystem. Recent expansions include entry into Taiwan in September 2025. In 2024, the company reported revenue of €2 billion. The company has raised nearly $2 billion in funding from investors including Sequoia Capital, Fidelity Management, and Didi Chuxing, achieving a peak valuation of $8.4 billion in 2022 while employing around 4,000 people globally as of 2025. Bolt's growth emphasizes affordability, rapid expansion, and integration of eco-friendly options, positioning it as a key European alternative to global giants like Uber, with plans for a potential initial public offering as early as 2026.

Mechanical and engineering uses

Fastener

A bolt is a headed fastener with external helical threads along a cylindrical shaft, designed to join two or more parts by mating with a nut or threaded hole, thereby transferring loads through applied torque. This distinguishes it from screws, which typically engage directly with a substrate without a separate nut. The term "bolt" derives from Old English bolt, referring to a short, or thick used in crossbows, evolving by the to denote a metal pin for fastening, implying secure closure like barring a . The origins of bolts trace to ancient civilizations, with evidence of iron bolts and rudimentary threaded fasteners in Roman engineering by the AD, used in and machinery for structural . principles date back further to around 400 BC, attributed to of , though early applications were often wooden. Industrialization in the 18th and 19th centuries spurred advancements, including Maudslay's 1800 screw-cutting for precise threads, enabling . emerged in the late 19th century, with William Sellers' 1864 United States Standard thread adopted by ASME in 1884, while the International Organization for Standardization (ISO) published the first metric standard (ISO 261) in 1973 to promote global . Common types include hex bolts, featuring a six-sided head for wrench application in general assembly; carriage bolts, with a rounded head and square neck to prevent rotation in wood or metal; eye bolts, equipped with a looped end for attaching cables or ropes; U-bolts, shaped like a U to secure pipes or structural elements; and lag bolts, heavy-duty with coarse threads for wood embedding without a nut. Materials vary by application, including for cost-effectiveness, for corrosion resistance in marine environments, and for lightweight high-strength needs in . Strength is graded, such as SAE Grade 5 (medium , 120,000 psi tensile strength) for moderate loads versus Grade 8 (, 150,000 psi) for high-stress uses, with metric equivalents like 8.8 and 10.9 denoting similar properties. Bolts are essential in for bridging beams, in automotive for and engine components, and in for connections where precision and reliability are critical. Proper application to achieve a preload typically 50-75% of the proof load without yielding the bolt ensures integrity, but overtightening can cause tensile by stretching the . Common failure modes include , where transverse forces exceed the thread cross-section, and from cyclic loading leading to crack propagation, accounting for 80-90% of fastener breaks in dynamic applications.

Other implements

A crossbow bolt, also known as a quarrel, is a short, thick projectile designed specifically for use in , distinguishing it from longer, fletched arrows used in conventional bows. Originating in ancient around the 5th century BCE and gaining prominence in medieval European warfare from the 11th century onward, these bolts were essential for sieges and due to the crossbow's in drawing power. Historically produced in large volumes for use, medieval bolts were typically crafted from wood shafts with iron or steel broadheads, while later variants incorporated rudimentary leather or wooden for stability. Modern crossbow bolts, evolved for and sport, utilize lightweight materials such as carbon fiber composites or aluminum alloys to enhance speed and durability, often weighing between 350-450 grains. The propulsion of a relies on the stored in the crossbow's prod (the bow-like limb), released via a trigger mechanism to achieve high initial velocities. In medieval contexts, bolts could reach speeds of approximately 200-250 feet per second (), sufficient to penetrate chainmail at close range, though modern recreations demonstrate velocities up to 400 with crossbows using synthetic strings and cams. This transfer, governed by the bolt's mass and the prod's draw weight (often 500–1,000 pounds or more in medieval war crossbow designs), made crossbows effective against armored foes despite their slower reload time compared to longbows. Door bolts are sliding metal bars used to secure doors, gates, or windows by extending into a strike plate, providing a simple yet robust locking mechanism without relying on keys. Surface-mounted bolts, also called barrel or rim bolts, are affixed directly to the door's interior surface with screws, making them easy to install on wooden or metal frames and suitable for additional security on outswing doors. Flush bolts, in contrast, are concealed within the door edge via mortising, ideal for double doors where one leaf secures to the other or frame, and they require precise alignment during installation to ensure smooth operation. Installation typically involves drilling pilot holes and securing with corrosion-resistant screws, with flush types demanding tools like chisels for recessing to maintain a seamless appearance. Security ratings for door bolts are standardized under ANSI/BHMA A156.36 for auxiliary locks, categorizing them into Grade 1 (highest durability, for commercial high-traffic use, enduring 250,000 cycles), Grade 2 (moderate residential/commercial, 125,000 cycles), and Grade 3 (basic light-duty, 60,000 cycles). These ratings assess resistance to forced entry, such as end load on deadbolt (minimum 1,350 pounds for Grade 1) and , ensuring bolts like heavy-duty surface models can withstand prying or impact without failure. The is a manual operating mechanism in firearms that uses a to lock the in the chamber, fire it, and extract the spent case, revolutionizing repeating in the late . The cycle begins with unlocking: the shooter lifts the bolt handle, rotating the bolt to disengage its locking lugs from the . and ejection follow as the bolt slides rearward, pulling the case via an extractor claw and flinging it out via an ejector. The is cocked during this motion, storing energy in a . Reloading occurs by pushing the bolt forward, where a from the is stripped by the bolt face and chambered; the bolt then rotates to lock via the lugs, sealing the breech for firing. Upon trigger pull, the spring drives the to strike the primer, igniting the . This controlled, reliable process minimizes gas escape and enables accurate long-range shooting. The , designed by and adopted by the , marked the first widespread bolt-action military rifle, featuring a design with a horizontal bolt handle and wing safety. Subsequent evolutions, like the 1898 , added internal magazines for rapid follow-up shots while retaining the core mechanism's strength, influencing designs in both World Wars. In textile production, the batten (also known as the beater) refers to a historical or component in looms, used to compact weft threads against the fell of the cloth after shuttle insertion. Emerging in ancient handlooms around 5000 BCE in regions like and evolving through medieval European frame looms, it consisted of a wooden or reed bar swung manually to beat the weft into place, ensuring dense fabric weave. By the , the batten integrated into power looms, such as Edmund Cartwright's 1785 steam-powered design, where a mechanically driven standing beater replaced hand operation, automating the beating process for higher efficiency in mills. This evolution from simple wooden battens to metal-reinforced mechanisms in 19th-century flying shuttle looms reduced labor and enabled of bolts of cloth, transforming the .

Technology and computing

Hardware interfaces

Thunderbolt is a high-speed technology developed by , first introduced in 2011 as a versatile connector for data, video, and over a single cable. It evolved from the connector, which Apple licensed to to integrate with (PCIe) protocols, enabling combined capabilities for display output and high-bandwidth data transfer. By 2025, has seen widespread adoption in both Apple and PC ecosystems, powering laptops, desktops, and peripherals with seamless integration in devices like the M4 series and various Windows ultrabooks. The technology has progressed through multiple versions, with Thunderbolt 5, announced in 2023, delivering up to 80 Gbps bidirectional bandwidth and 120 Gbps in Bandwidth Boost mode for demanding unidirectional tasks like video editing. Key features include daisy-chaining up to six devices per port, power delivery capabilities reaching 100 W in Thunderbolt 4 and up to 240 W in Thunderbolt 5 for charging laptops and peripherals, and full compatibility with USB4 standards to ensure backward and forward interoperability. These specifications build on mechanical bolt principles by providing secure, reliable physical connections that maintain signal integrity under high loads. In engineering contexts, refer to specialized electrical and hydraulic fasteners used for robust joints in systems requiring high and durability, such as power transmission lines where bolted connections secure conductors to ensure minimal resistance and prevent failures. Standards like IEEE 837 qualify these permanent connections for grounding in substations, testing for thermal cycling, fault current withstand, and corrosion resistance to maintain electrical integrity. For instance, split bolt connectors, such as those from , are employed for splicing and terminating overhead lines, adhering to IEEE guidelines for fasteners in overhead construction to optimize and mechanical strength. Thunderbolt's applications center on high-speed data transfer for peripherals, external GPUs (eGPUs), and docking stations, facilitating connections for storage drives, monitors, and expansion hardware. In AI hardware acceleration, it enables eGPUs to offload machine learning workloads from laptops, as seen in setups using NVIDIA RTX cards via Thunderbolt 3 or later for faster training on portable systems. Docking stations, like those from Plugable or Kensington, leverage Thunderbolt to support multiple 4K or 8K displays, Ethernet, and USB devices through a single cable, streamlining workflows in professional environments. Bandwidth in is derived from its underlying PCIe architecture, where the data rate can be calculated as the product of the number of , bits per lane, and clock speed, adjusted for encoding overhead—for example, 3 utilizes four of PCIe Gen 3 at approximately 8 GT/s per lane, yielding a raw rate of about 32 Gbps before allocation. This formula underscores the interface's scalability, allowing configurations like x4 to balance data and video demands efficiently.

Software tools

BoltDB is an embedded key-value database written in the Go programming language, developed by Ben Johnson and initially released in 2013 as a port of the LMDB project that later diverged for simplicity and reliability in Go ecosystems. Although the project is no longer actively maintained (archived since 2021), it remains stable and widely used in legacy and specific applications. It supports fully serializable ACID transactions through multi-version concurrency control (MVCC) with shadow paging, allowing multiple concurrent readers but enforcing a single writer to maintain consistency without external dependencies like client libraries or servers. This design makes BoltDB ideal for lightweight, embedded storage in applications such as etcd for key-value coordination, InfluxDB for time-series data, and Consul for service discovery, where it handles persistent storage without the overhead of full database servers. Performance benchmarks demonstrate its efficiency, with capabilities exceeding 10,000 random writes per second on SSDs for high-throughput scenarios, and specific tests achieving up to 44,000 inserts per second on datasets reaching gigabytes in size. Compared to alternatives like SQLite, BoltDB prioritizes key-value operations over relational queries, offering simpler APIs and better suitability for non-SQL workloads while maintaining comparable embedded portability but with Go-native optimizations. The Bolt protocol serves as Neo4j's binary network protocol for efficient communication with graph databases, introduced in December 2015 as part of 3.0 Milestone 1 to replace less performant text-based alternatives like HTTP/. Designed for high-throughput query execution over connections, it employs a compact wire format that encodes messages in a structured layout, reducing parsing overhead and usage compared to verbose formats. Key message types include INIT for connection handshakes, RUN for executing queries, PULL and DISCARD for result streaming and cleanup, and dedicated structures for transactions like BEGIN, COMMIT, and ROLLBACK, enabling atomic operations across graph traversals. This protocol underpins official Neo4j drivers in languages such as , , and , facilitating seamless integration for applications performing complex graph analytics, such as or recommendation engines, with throughput improvements of up to several times over prior protocols due to its efficiency. Salesforce Lightning Bolt is a low-code framework within the Salesforce ecosystem for rapidly building and deploying customer communities, portals, and web applications, launched in September 2016 to streamline development using pre-configured templates. It leverages Lightning Components—reusable UI building blocks—and integrates natively with Salesforce CRM data, automation tools like Flow, and security features, allowing non-developers to customize experiences such as member directories, event registrations, or e-commerce portals without extensive coding. For instance, industries like financial services use it to create secure client portals for account management, while healthcare applications enable patient self-service interfaces, all deployable in days rather than months. In contrast to embedded databases like SQLite, which focus on local data persistence, Lightning Bolt emphasizes declarative app assembly on a cloud platform, prioritizing user interface and integration scalability over raw storage performance.

Vehicles and transportation

Automobile models

The Chevrolet Bolt is a battery electric subcompact hatchback introduced by General Motors (GM) under its Chevrolet brand in late 2016, developed in response to the growing demand for affordable electric vehicles during the mid-2010s EV market expansion. Designed on GM's BEV2 platform, the initial model featured a 200-horsepower electric motor powered by a 60 kWh lithium-ion battery pack from LG Chem, delivering an EPA-estimated range of 259 miles per charge. The Bolt's development emphasized accessible EV technology, with production starting at GM's Orion Assembly plant in Michigan, and it quickly gained traction for its sub-$40,000 starting price after federal incentives. By 2023, cumulative U.S. sales exceeded 200,000 units, including a record 62,045 deliveries that year amid high demand for budget EVs. Production faced challenges, including a 2021-2022 halt due to battery fire risks from faulty LG cells, leading to discontinuation announcements in late 2022; however, strong sales and resolved battery issues prompted GM to revive the lineup with a refreshed model announced in October 2025 for early 2026 availability. In 2021, Chevrolet expanded the Bolt lineup with the Bolt EUV, a variant sharing the same but offering increased cargo space (up to 57 cubic feet with seats folded) and a slightly lower 247-mile EPA range due to its taller profile. Compared to the , the Bolt models provide similar everyday range at a lower (around $27,000-33,000 versus $40,000+ for the base Model 3), though they lag in charging speed and acceleration, with the Bolt reaching 0-60 mph in about 6.5 seconds versus the Model 3's 5.8 seconds. Engineering highlights of the Bolt include its system, which enables one-pedal driving by aggressively recapturing energy during deceleration to extend range by up to 10-15% in urban settings. The 2025 refresh adopts GM's battery platform with cells for improved durability and supports 150 kW fast charging, achieving 10-80% in 26 minutes—roughly three times faster than the original model's 55 kW capability. Autonomy features, such as optional Super Cruise hands-free driving on compatible highways, integrate with the updated model's enhanced sensors for and .

Ride-sharing services

Bolt is an Estonian multinational mobility company offering ride-hailing services through its app, founded in 2013 as Taxify by Markus Villig and rebranded to Bolt in 2019. As of 2025, it operates in over 50 countries and more than 600 cities, with recent expansions including a launch in Toronto, Canada, in February 2025. The service connects riders with drivers, emphasizing affordability, electric vehicle options, and features like e-scooter rentals. Bolt has raised nearly $2 billion in funding, achieving a valuation of approximately $11 billion as of 2025, and reported €2 billion in revenue for 2024. It has served over 200 million customers worldwide and employs around 3,000 people, with plans for a potential initial public offering in 2025 or 2026.

Sports and athletics

Athletes

Usain Bolt, born August 21, 1986, in Trelawny, , is a retired sprinter widely recognized as the greatest of all time, holding world records in the 100 meters (9.58 seconds, set at the 2009 World Championships in ) and 200 meters (19.19 seconds, also in 2009). He also contributed to the Jamaican 4x100-meter relay world record of 36.84 seconds, established at the 2012 . Bolt amassed eight gold medals across three Games—three each in 2008 (), 2012 (), and 2016 ()—becoming the first sprinter to win the 100 meters and 200 meters at three consecutive Olympics. Under coach , his training emphasized explosive power through , , and exercises, optimizing his 6-foot-5 frame for a stride length averaging 2.44 meters, which revolutionized sprinting by prioritizing velocity over turnover rate. Bolt retired in 2017 after pulling up injured during the of the 4x100-meter at the s in , where placed third, capping a career that included 11 golds. Post-retirement, he pursued music production, releasing singles like "Olympic Way" in 2012 and founding the label Solid Rock Records, while venturing into business with endorsements from (renewed through 2025). In 2025, Bolt continued global endorsements, including appearances promoting athletic wear and youth programs, expressed interest in coaching emerging Jamaican sprinters—including offering private lessons—and encouraged athletes ahead of the in , to sustain the island's sprinting dominance. Other notable athletes bearing the surname Bolt include , a motorcycle racer born in 1997, who has dominated indoor off-road disciplines. Bolt secured multiple FIM World Championships, including five SuperEnduro titles (2020, 2022–2025) with four consecutive from 2022 to 2025 and the inaugural Hard Enduro World Championship in 2021, excelling through precise throttle control and adaptability on technical terrain. His training regimen focuses on endurance cycling and strength conditioning to handle the physical demands of high-speed obstacles. Tommy Bolt (1916–2008), an American professional golfer, won 15 events, highlighted by the 1958 U.S. Open victory at , where his renowned ball-striking precision—honed through dedicated practice swings—earned him a reputation as one of golf's purest hitters despite a fiery . Bolt's legacy extends beyond records, as his charismatic persona and barrier-breaking performances popularized globally, inspiring increased participation in sprinting among youth and elevating Jamaica's status in international athletics. His influence on continues to inform training models, emphasizing efficient energy transfer in long-striding athletes.

Events and terms

In archery, particularly with crossbows, a bolt—also known as a quarrel—is a short, dart-like projectile designed for use in such weapons, distinguished from longer arrows used in traditional bows by its compact size and fletching suited for mechanical propulsion. In field archery competitions governed by organizations like the World Crossbow Shooting Association (WCSA), crossbow users shoot bolts at varying distances on natural terrain courses, typically firing four bolts per target on standard field faces adapted from World Archery specifications, where scoring ranges from 5 points for the innermost gold ring to 1 point for the outermost white ring, with a maximum of 20 points per target for amateurs. Animal rounds, another format in these events, simulate hunting scenarios with vital and non-vital zones on targets; bolts hitting the vital area score higher (up to 11 points for the first bolt), while non-vital hits yield 8 or fewer points, emphasizing precision over volume. In sprinting events, the starting serves as a critical mechanism for detection, with systems like those developed by incorporating sensors in the pedals to measure an athlete's reaction time to the starter's gun. Introduced in major competitions during the 1980s, including the 1984 Olympics, these blocks register pedal pressure; any movement exceeding a force threshold before 100 milliseconds (0.1 seconds) after the gun signals a , as this duration represents the human physiological minimum for auditory reaction, leading to immediate disqualification under World Athletics rules. This threshold ensures fairness, preventing anticipatory movements that could advantage faster-reacting athletes, such as those exemplifying explosive speed in events like the 100-meter dash. In esports, particularly within titles like , "bolt" often refers to a swift, projectile-based ability or action executed by characters, embodying quick tactical maneuvers in competitive play. For instance, the hero Freja employs a that fires rapid bolts in her primary attack, supplemented by abilities like Take Aim for a high-speed explosive bolt that pierces barriers and Quick Dash for rapid repositioning to reload and evade, allowing players to chain fast engagements in team-based matches. These mechanics highlight "bolt" as slang for instantaneous, high-impact plays, influencing strategies in professional leagues where split-second decisions determine outcomes.

Arts, entertainment, and media

Films and television

Bolt is a 2008 American computer-animated adventure comedy film produced by and released by . Directed by Chris Williams and in their feature directorial debuts, the film centers on Bolt, a white American Shepherd dog who stars as a fictional in a popular television series of the same name. Voiced by , Bolt genuinely believes his superpowers—such as super strength, speed, and laser vision—are real due to careful production tricks that isolate him from the outside world. When his young co-star and owner , voiced by , appears to be kidnapped, Bolt escapes from to and embarks on a cross-country journey to rescue her, joined by a sassy named Mittens (voiced by ) and an enthusiastic named Rhino (voiced by Mark Walton). The story explores themes of , the blurred line between reality and fiction, and self-discovery, drawing parallels to real Hollywood stardom while delivering action-packed sequences inspired by superhero genres. The film's screenplay was written by and Chris Williams, based on a story by Williams and , with production overseen by . It marked a transitional era for Animation, blending traditional techniques with advanced , particularly in rendering Bolt's fur and dynamic action scenes. The voice cast also includes as the villainous Dr. Calico, Penny's agent voiced by , Chloë Grace Moretz as young Penny, and as the director of the Bolt TV series. The narrative incorporates meta-elements, including clips from the in-universe TV show Bolt, which parodies sci-fi action series with over-the-top stunts and dramatic plots. Upon release on November 21, 2008, Bolt grossed $114.1 million in and $309.8 million worldwide against a $150 million budget, performing solidly but not as a compared to contemporaries like Pixar's output. Critics praised its heartfelt story, vibrant , and Travolta's committed performance, with a 90% approval rating on based on 189 reviews, where it was lauded as a return to form for after earlier underperformers. However, some noted familiar tropes in the road-trip adventure format. Audience reception was positive, earning a 75% score, with families appreciating the humor and emotional depth. Bolt received an Academy Award nomination for Best Animated Feature at the 81st Academy Awards in 2009, losing to Pixar's WALL-E, but it won several other accolades, including the Annie Award for Best Character Animation and a nomination for Best Music in an Animated Feature Production. The film's score, composed by Mark Mancina, was also nominated for awards, briefly referencing the upbeat soundtrack from its fictional TV show episodes. In television, Bolt prominently features the eponymous fictional sci-fi action series within its narrative, depicted through high-energy episodes where the canine hero battles mad scientists and saves the world, emphasizing the film's commentary on media illusion. Beyond this, the 2010–2011 Canadian animated series Bolts and Blip, produced by Breakthrough Films and aired on Teletoon, follows two android brothers—one named Bolt—in a futuristic sports league on the Moon, blending sci-fi adventure with comedy in 52 episodes focused on teamwork and underdog triumphs. As of November 2025, the original Bolt film remains a staple in the Disney+ catalog, available for streaming alongside related shorts, with no official sequel or reboot announced despite ongoing fan interest.

Music and literature

In music, "Bolt the Door" is a traditional jig dating back to at least the , commonly performed by artists as an tune evoking themes of security and haste through its lively . Contemporary duo Bolt the Door, based in , incorporates the jig into their repertoire of traditional Irish, Scottish, and English songs, releasing interpretations on albums like Weather the Storm in 2024. Pearl Jam's 2013 album Lightning Bolt, produced by Brendan O'Brien, marked the band's tenth studio release and debuted at number one on the , selling 166,000 copies in its first week—the largest rock album debut of the year. The uses imagery as a for an intense encounter, with lyrics like "She goes away and then she comes back" capturing a cyclical, electrifying attraction that propels the song's driving rock energy. In literature, Anton Chekhov's short story "A Malefactor" (1885) centers on a railway worker arrested for removing a bolt from a track, highlighting themes of injustice and petty crime through the protagonist's bewildered defense that the item served as a fishing weight. The narrative critiques Russia's legal system with ironic detachment, underscoring how mundane objects like a bolt can precipitate disproportionate consequences. Bolt metaphors appear recurrently in poetry, as in Emily Dickinson's "Tell all the truth but tell it slant" (c. 1868), where lightning represents truth's dazzling, potentially overwhelming surprise: "The Truth's superb surprise / As Lightning to the Children eased / With explanation kind / The Truth must dazzle gradually / Or every man be blind." Similarly, in "The Lightning is a Yellow Fork" (c. 1861), Dickinson extends the image to divine judgment, likening a bolt to a fork handling souls with mechanical precision. In comics, Marvel's Black Bolt (Blackagar Boltagon), created by Stan Lee and Jack Kirby, first appeared in Fantastic Four #45 (December 1965) as the silent king of the Inhumans, whose merest whisper unleashes destructive sonic energy, forcing him to communicate through gestures and his wife Medusa. The character's publication history spans Inhumans-centric series like Uncanny Inhumans (2015–2018), emphasizing his internal conflict and royal duty amid threats to his hidden society. In DC Comics, Bolt (Larry Bolatinsky), a former special effects artist turned assassin, debuted in Blue Devil #6 (November 1984), wielding a teleportation suit powered by electricity for criminal enterprises against heroes like Blue Devil. This minor villain's arcs explore themes of technological misuse, with later appearances in events like Identity Crisis (2004) portraying him as a hired gun in broader DC narratives. Another DC character using the name Bolt is Alinta, a teenage Australian speedster who first appeared in Teen Titans Academy #1 (2021), using brief superhuman bursts of speed for heroic feats in team settings. Additionally, Malik White, a medical student and descendant of Black Adam from Kahndaq, debuted as Bolt in Black Adam #1 (2022), inheriting magical lightning powers to become a hero.

Businesses and organizations

Technology companies

Bolt (e-commerce), founded in 2014 and headquartered in , , is a company specializing in one-click online checkout solutions for merchants. The platform enables seamless purchasing by storing user payment and shipping information, reducing friction in the process and supporting integrations with various platforms, including through dedicated setup guides for checkout implementation. Bolt has expanded its offerings to include mobile capabilities, launching a in 2025 that integrates payments, rewards, banking, and features across and devices, effectively functioning as a consumer wallet. In June 2025, the company was seeking $300 million in funding at an $11 billion valuation, building on prior raises such as a $355 million Series E in 2022 that valued it at $11 billion. Bolt's technology contributes to lowering cart abandonment rates, which average around 70-80% industry-wide, by streamlining checkout and providing transparent pricing, though specific reductions vary by merchant implementation. The company has conducted multiple funding rounds, including a $393 million Series D in 2021 and a $75 million extension in 2020, but has not pursued notable acquisitions to date. Bolt Threads, a biotechnology company founded in 2009 and based in Emeryville, California, develops sustainable materials inspired by natural proteins, with a primary focus on alternatives to traditional silk derived from spider silk proteins. The firm engineers these materials using fermentation processes involving yeast and sugars, producing products like Microsilk, a vegan, biodegradable fabric that requires significantly less water and energy than conventional silk production. Microsilk has been incorporated into apparel, notably in a 2019 collaboration with Adidas and Stella McCartney for the Biofabric Tennis Dress, a prototype garment highlighting its potential for performance sportswear. Bolt Threads emphasizes sustainability, aiming to reduce the textile industry's environmental footprint through renewable feedstocks and end-of-life biodegradability, with processes that avoid petroleum-based inputs. The company holds multiple patents protecting its protein-based technologies in the United States and internationally. Bolt Threads has raised over $219 million across 11 funding rounds, including grants and venture investments from firms like Formation 8 and Foundation Capital. In August 2024, it completed a business combination with Golden Arrow Merger Corp via SPAC, becoming publicly traded on Nasdaq under the ticker BSLK as Bolt Projects Holdings Inc., with a post-merger valuation of $250 million; by mid-2025, it reported ongoing financing efforts, including a $20 million term sheet.

Other enterprises

Bolt Publishing LLC is a boutique independent publishing company based in , specializing in the production of various printed materials for clients across multiple industries. Founded as a small-scale operation, it focuses on custom book and print projects, maintaining an active catalog available through platforms like . In , Bolt Publishing Services Pty Ltd operates as an independent publisher distributing educational and specialist titles through networks like Wheelers Books, catering to school and library markets with a selection of printed resources. Bolt Lock is an hardware firm specializing in secure locking solutions for and equipment, offering products such as padlocks, hitch pin locks, trailer locks, and cable locks designed for tool boxes, ute canopies, and 4WD accessories. These locks feature one-key technology compatible with vehicle ignition keys, providing convenience and enhanced for outdoor and applications, backed by a limited lifetime warranty. The BOLT Charitable Foundation, based in , , is a dedicated to inspiring in the through education and career development programs. Established to address workforce needs, it provides scholarships, opportunities, and events like Speak Outs and Days of Discovery to raise awareness of careers, including aspects. The foundation supports students in and technologies programs, such as those at , with awards and training initiatives renewed as of 2020 to promote diverse employment pathways. Membership is open to professionals and supporters, facilitating grants and collaborative educational efforts.

Places and geography

Real locations

Bolt, West Virginia, is an unincorporated in Raleigh County, located along Route 99 approximately 12 miles west of Beckley. The community has deep roots in the industry, with historical infrastructure such as coal tipples and mining operations shaping its development in the early 20th century. As of the , Bolt had a of 518 . The area features a rural landscape typical of southern 's region, with nearby access to natural attractions and a serving ZIP code 25817. Adjacent to the community is Bolt Mountain, a prominent ridge in Raleigh County known for its steep, winding terrain along Route 99, which was first paved in the mid-1960s. The mountain, sometimes referred to locally in connection with nearby towns, offers scenic overlooks like the Stover Scenic Overlook, providing views of the surrounding valleys and highlighting the rugged geography of the region. This feature contributes to the area's appeal for motorists and locals navigating the twisty roads amid the foothills. Outside , Bolt Mountain is also the name of a peak in , rising to an elevation of 2,236 feet (682 meters). Situated near Grants Pass, it features a challenging 6.4-mile out-and-back trail that gains about 1,300 feet in elevation, passing through rocky, lightly shaded terrain with opportunities for wildflower viewing in season. The trailhead is accessible from Hatchery Park, making it a popular destination for outdoor enthusiasts in the Rogue River-Siskiyou National Forest area.

Fictional places

In the indie Young (2021) by Ben Sears, Bolt City serves as the primary urban setting for a narrative, depicted as a futuristic sci-fi characterized by dichotomous that blends everyday grit with advanced , rather than a uniformly gleaming . The city is home to the protagonist, a young known as Young , who patrols its rooftops and alleys, performing routine acts of heroism such as deliveries and rescues while confronting threats from powerful entities like corrupt executives revealed to be infiltrators. Key events unfold amid Bolt City's neon-lit streets and shadowy underbelly, where Young uncovers a involving the , leading to high-stakes confrontations that test the vigilante's resourcefulness and the city's fragile social fabric. Bolt Island appears in the adventure comic series Toy (2023) by Keenspot Entertainment, portrayed as a remote, high-tech enclave dedicated to and , isolated from the mainland to foster unchecked innovation. In issue #4, the island becomes the focal point of a crisis when protagonist receives a distress signal from his former colleague, Elmer , the island's inventor, whose automated workforce has been compromised by a rampant , turning the once-thriving hub of mechanical wonders into a chaotic battleground of malfunctioning machines. This lore emphasizes themes of technological and , with the island's tropical isolation amplifying the sense of urgency as races to contain the outbreak and restore order to its labyrinthine labs and automated defenses. While earlier adventure literature from the 19th century does not prominently feature a Bolt Island, modern media adaptations draw on similar motifs of mysterious, tech-infused isles to evoke peril and discovery in narrative fiction.

Other uses

Natural phenomena

A lightning bolt is a massive electrostatic discharge that occurs during thunderstorms, resulting from the buildup and rapid release of electrical energy between charged regions in the atmosphere. This phenomenon equalizes charge imbalances, often accompanied by thunder from the rapid expansion of superheated air. Typical cloud-to-ground lightning flashes carry approximately 300 million volts and 30,000 amperes of current, though voltages can range from 100 million to 1 billion volts, with peak currents varying from 5,000 to over 200,000 amperes. Lightning bolts occur in several types, with intracloud flashes—discharges within a single thundercloud—being the most common, accounting for the majority of events. Cloud-to- bolts, which connect the cloud to the Earth's surface, represent about 20-25% of total and are particularly hazardous due to their intensity and contact. These discharges the surrounding air to around 30,000°C, far exceeding the surface temperature of . In textiles, a bolt refers to a standardized roll of fabric used as a in trade, historically varying by region but often comprising 36 to 40 yards in length to facilitate and . This convention originated in medieval markets, where consistent bolt sizes ensured fair exchange of woolens and , with widths typically around 27 to 60 inches depending on the . Modern bolts can range from 15 to 100 yards, but the traditional 40-yard standard persists in many wholesale contexts for cottons and similar fabrics. In and , bolting describes the premature initiation of a flowering in , a response that shifts energy from vegetative growth to , rendering crops like bitter and unmarketable. This process is triggered by environmental stressors such as prolonged exposure to temperatures above 85°F (29°C), long daylight hours, or nutrient imbalances, which activate hormonal pathways like that elongate the and induce flowering. In (Lactuca sativa), bolting is particularly problematic in warm climates, where it can reduce yields by up to 50% if not managed. Farmers prevent bolting through strategies including selecting heat-tolerant or bolt-resistant varieties, timing plantings to avoid peak summer heat, providing shade cloth to lower temperatures by 5-10°F, and maintaining optimal and fertility to minimize . Recent climate models indicate that will increase frequency, exacerbating risks from these natural phenomena. According to projections from 2025 Earth system simulations, activity is expected to rise by approximately 1.6% per degree of warming, driven by heightened atmospheric and moisture, though earlier estimates suggested up to 12% per degree based on regional data. The (IPCC) attributes these trends to intensified activity in a warmer atmosphere, potentially leading to more frequent cloud-to-ground strikes in vulnerable areas.

Miscellaneous terms

In slang usage, "bolt" refers to running away suddenly or fleeing abruptly, as in the phrase "make a bolt for it," which implies a hasty . This sense derives from the behavior of suddenly dashing off uncontrollably, a notion recorded by the early and linked to the rapid flight of game or animals. The term's association with contexts, such as a veering off course during or riding, further reinforced its meaning of uncontrolled speed or departure. In heraldry, a bolt—often depicted as a or —symbolizes swiftness, power, and decisive action, representing the ability to strike with clarity and force. This emblem appears in coats of arms to denote energy or rapid intervention, evoking the mythological wielded by gods like or for authoritative impact. Historically in milling and cooking, "bolted flour" denotes flour that has been sifted or "bolted" through fine cloth to separate the and coarser particles from the , producing a whiter, finer product suitable for . This process, dating back to ancient techniques using woven sieves, prevented spoilage by removing the fatty and allowed for graded s, with bolting cloths evolving from to by the medieval period. In traditional recipes, bolted flour yields lighter breads and pastries compared to unbolted whole-grain varieties.

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