EMR
EMR is an initialism or acronym with multiple meanings in various fields. It may refer to: For detailed information on each, see the respective sections below.Companies
Emerson Electric
Emerson Electric Co. is an American multinational corporation headquartered in St. Louis, Missouri, founded in 1890 by Civil War veteran John Wesley Emerson as the Emerson Electric Manufacturing Company.[1] Initially focused on producing electric motors and fans—the first such manufacturer in North America—the company quickly expanded its product line to include ceiling fans and other electrical appliances.[1] Over the decades, Emerson transitioned from its origins in basic electrical manufacturing to a global leader in advanced technology and engineering solutions.[1] Listed on the New York Stock Exchange under the ticker symbol EMR, Emerson provides automation solutions, software, and engineering products serving industrial, commercial, and consumer markets worldwide.[2] The company's operations emphasize process automation, control systems, and measurement technologies, supporting sectors such as manufacturing, energy, and infrastructure.[1] As of 2025, Emerson employs approximately 71,000 people across more than 130 countries, driving innovation in areas like industrial IoT and sustainable technologies.[3] Emerson's business is structured into two main segments: Intelligent Devices, which includes final control, measurement and analytical, discrete automation, and safety and productivity solutions generating $12.4 billion in fiscal 2025 sales; and Software and Control, encompassing control systems, software, and test and measurement products contributing $5.7 billion.[4] For the fiscal year ended September 30, 2025, the company achieved net sales of $18.0 billion, reflecting a 3% increase from the prior year amid resilient demand in process and hybrid automation markets.[4] A key aspect of Emerson's evolution has been its aggressive acquisition strategy, which has broadened its technological capabilities from early electric motor production to a diversified portfolio in automation and software.[1] Notable milestones include the 1976 acquisition of Rosemount for process instrumentation, the 1986 purchase of Copeland for refrigeration compressors, and more recent deals such as the $8.2 billion acquisition of National Instruments in 2023 to enhance test and measurement offerings, alongside the integration of AspenTech for advanced software solutions.[1] These moves have solidified Emerson's position as a Fortune 500 company with a focus on high-margin, software-enabled automation technologies.[1]European Metal Recycling
European Metal Recycling (EMR) is a global scrap metal recycling company headquartered in Warrington, United Kingdom, with operations spanning Europe, North America, and Asia.[5] The company traces its origins to the 1950s, when Winifred Sheppard established a small scrap metal business in Rochdale, Greater Manchester, UK, but it was formally founded as European Metal Recycling in 1994 through the Sheppard family's acquisition of Coopers Metals, retaining family ownership under the leadership of Phillip Sheppard.[6][7] This merger marked the beginning of EMR's expansion from a regional UK operation into a major international player in the metals recycling sector.[6] EMR's core activities focus on the collection, processing, and trading of ferrous and non-ferrous recycled metals, supporting the circular economy by diverting waste from landfills and reducing reliance on virgin materials.[8][9] The company operates over 100 processing facilities worldwide, handling a diverse range of scrap from sources like end-of-life vehicles, industrial waste, and electronics, while emphasizing sustainability through initiatives like zero-landfill goals and CO2 emissions reductions equivalent to removing millions of cars from roads annually.[5][10] In 2013, EMR's UK operations generated pre-tax profits of £47 million, reflecting its scale amid global market challenges. In 2023, the company reported sales of £4.1 billion but a net loss of £22 million, impacted by global economic challenges including the war in Ukraine.[11][12] Currently, the company processes over 10 million tonnes of metal and plastic each year, contributing to environmental benefits such as energy savings and lower greenhouse gas emissions in metal production.[9] Owned by the Sheppard family through the Ausurus Group, EMR has grown via strategic acquisitions, including the 2006 purchases of Camden and Southern, as well as the Northern group of scrap businesses in the United States, and the 2010 acquisition of International Shipbreaking for specialized vessel recycling.[13][14] These expansions have strengthened its North American footprint, complementing core European activities and enabling global trading networks that align with principles of resource efficiency and sustainable metals supply.[6][14]East Midlands Railway
East Midlands Railway (EMR) is a train operating company in the United Kingdom, abbreviated as EMR, responsible for providing intercity and regional rail services across the East Midlands region. The franchise was awarded in April 2019 to Abellio East Midlands Limited, a subsidiary of Abellio UK, for an initial eight-year period from August 2019 to August 2027, with the operator now managed under Transport UK Group following a 2023 management buyout.[15][16] EMR's primary routes include intercity services from London St Pancras International to Sheffield via Leicester, Derby, and Nottingham, alongside regional connections such as Nottingham to Lincoln and Derby to Matlock. The fleet consists of Class 158 and Class 170 diesel multiple units for regional services, supplemented by Class 222 Meridian tilting trains and High Speed Trains (Class 43 power cars with Mark 3 coaches) for intercity routes, with additional Class 360 electric multiple units deployed on select Connect services. Planned introductions include the new Class 810 Aurora bi-mode trains, with the first unit entering passenger service in December 2025 as part of a £400 million fleet replacement program to enhance capacity and support electrification.[17][18][19][20] EMR assumed operations on 18 August 2019, directly replacing the previous East Midlands Trains franchise holder, Stagecoach. The original franchise agreement included commitments to Midland Main Line electrification between London and Sheffield by 2025, though as of 2025, further electrification has been paused indefinitely, with completion now expected in the early 2030s, alongside investments in new rolling stock to improve reliability and passenger experience.[21][22][23][24][25] In the financial year 2023-24, EMR served 28.9 million passenger journeys, emphasizing enhanced connectivity for business travel to London and leisure trips within the region.[26]Science and technology
Electromagnetic radiation
Electromagnetic radiation consists of self-propagating waves composed of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of propagation. These waves travel through vacuum at the speed of light, c = 299\,792\,458 m/s, and can also propagate through matter, though at reduced speeds depending on the medium.[27][28] Electromagnetic radiation carries energy, linear momentum, and angular momentum, enabling it to interact with matter by transferring these quantities upon absorption or scattering.[29][30] In quantum terms, electromagnetic radiation is quantized into discrete packets called photons, each with energy given by the equationE = h \nu,
where E is the photon energy, h is Planck's constant (h = 6.626\,070\,15 \times 10^{-34} J s), and \nu is the frequency of the radiation.[31][28] The wavelength \lambda relates to frequency via
\lambda = \frac{c}{\nu},
such that higher-frequency radiation corresponds to shorter wavelengths and greater photon energy.[28] The electromagnetic spectrum encompasses a continuous range of frequencies (or equivalently, wavelengths) from low-frequency radio waves, with wavelengths on the order of kilometers, through microwaves, infrared radiation, visible light (approximately 400–700 nm), ultraviolet, X-rays, to high-frequency gamma rays with wavelengths shorter than atomic nuclei.[32] This spectrum arises from the same fundamental wave nature but is classified by frequency-dependent interactions with matter, such as radio waves penetrating materials easily while gamma rays are highly ionizing. The theoretical foundation of electromagnetic radiation was unified by James Clerk Maxwell in 1865, who derived equations showing that electric and magnetic fields could generate propagating waves at the speed of light, predicting the existence of such radiation.[33] Experimental confirmation came in 1887 from Heinrich Hertz, who generated and detected radio waves using spark-gap transmitters and resonators, verifying Maxwell's predictions and demonstrating wave reflection, refraction, and interference.[34]