ESR may refer to:


  • Electro-slag remelting, an alloy remelting and refining process
  • Electronic Staff Record, a human resources and payroll system of the UK National Health Service
  • Emergency Sun Reacquisition, an attitude control mode of the Solar and Heliospheric Observatory (SOHO)
  • Equivalent series resistance, the resistive parts of the impedance of certain electrical components
  • ESR Technology, a UK company
  • Emergency speed restriction or slow zone on British railways
  • Extended Support Release, a line of Firefox developed separately, in order to maintain security.


  • EISCAT Svalbard Radar
  • Electron spin resonance or electron paramagnetic resonance, a technique used in chemical spectroscopy to identify unpaired electrons and free radicals
  • Environmental stress cracking, a cause of unexpected brittle failure of thermoplastic polymers
  • Erythrocyte sedimentation rate, the rate at which red blood cells sediment in a period of 1 hour; a medical test for inflammation
  • Estrogen receptor
  • European Society of Radiology


  • Environmental and Social Responsibility


  • Experiment In Self-Reliance, a homelessness organization in Winston-Salem, NC
  • East Somerset Railway, a heritage railway in the United Kingdom
  • Institute of Environmental Science and Research, a New Zealand scientific institute
  • Earlham School of Religion at Earlham College in Richmond, Indiana, United States
  • Eric S. Raymond, an open source software advocate
  • E.S.R., Inc.
  • ESR, the IATA code for the Ricardo García Posada Airport

Other articles related to "esr":

European Society Of Radiology
... Founded in 2005, the European Society of Radiology (ESR) is dedicated to promoting and coordinating the scientific, philanthropic, intellectual and professional activities ... The ESR is based in Vienna, Austria ... The ESR was created through the merger of two established societies the European Association of Radiology (EAR), a federation of national societies founded in ...
Ceramic Capacitor - Electrical Characteristics - ESR, Dissipation Factor, and Quality Factor
... resistive losses of a capacitor may be specified either as equivalent series resistance (ESR), as dissipation factor(DF, tan δ), or as quality factor (Q), depending on ... is determined as the tangent of the reactance - and the ESR, and can be shown as the angle δ between imaginary and the impedance axis in the above vector diagram ...
Loss Tangent - Discrete Circuit Perspective
... termed the equivalent series resistance (ESR), as shown in the figure below ... The ESR represents losses in the capacitor ... In a low-loss capacitor the ESR is very small, and in a lossy capacitor the ESR can be large ...
Samuel Isaac Weissman
... best known for his work on the application of electron spin resonance (ESR) to chemistry ... in parallel with Clyde Hutchison, to measure the hyperfine splitting of the ESR line caused by the interaction with nuclear spins ... is the main source of the sensitivity of ESR to the chemical environment of the electron, and hence it underlies the broad applications of ESR in chemistry ...