Electrical Fundamentals - E
... held (bound) loosely to the atom, they can easily move to another atom or make room for more electrons. • Conductor material includes copper and gold. ...
... held (bound) loosely to the atom, they can easily move to another atom or make room for more electrons. • Conductor material includes copper and gold. ...
Transmission Electron Microscopy -TEM
... them as optical lenses do to light. After confirming these principles through research, he set out to design the electron microscope. Ruska had deduced that an electron microscope would be much more powerful than an ordinary optical microscope since electron waves were shorter than ordinary light wa ...
... them as optical lenses do to light. After confirming these principles through research, he set out to design the electron microscope. Ruska had deduced that an electron microscope would be much more powerful than an ordinary optical microscope since electron waves were shorter than ordinary light wa ...
Organic Light Emitting Diodes
... A light-emitting diode (LED) is a twolead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. ...
... A light-emitting diode (LED) is a twolead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. ...
The Acceleration of Electrons by Magnetic Induction
... orbit and dx is the shift of the circle toward the equilibrium orbit while the electron’s energy increases by the fraction dE/E. Because of the shrinking or expansion of the instantaneous circle of a displaced electron toward the equilibrium orbit and the decrease of the amplitude of oscillation of ...
... orbit and dx is the shift of the circle toward the equilibrium orbit while the electron’s energy increases by the fraction dE/E. Because of the shrinking or expansion of the instantaneous circle of a displaced electron toward the equilibrium orbit and the decrease of the amplitude of oscillation of ...
Stationary X
... KL22-1.8-90 Stationary anode X-Ray Tube is especially designed for portable or mobile x-ray unit and available for a nominal tube voltage with self-rectified circuit. The integrated high quality tube with glass design has one super imposed focal spot and a reinforced anode. The high anode heat stora ...
... KL22-1.8-90 Stationary anode X-Ray Tube is especially designed for portable or mobile x-ray unit and available for a nominal tube voltage with self-rectified circuit. The integrated high quality tube with glass design has one super imposed focal spot and a reinforced anode. The high anode heat stora ...
Photomultiplier
Photomultiplier tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically vacuum phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum. These detectors multiply the current produced by incident light by as much as 100 million times (i.e., 160 dB), in multiple dynode stages, enabling (for example) individual photons to be detected when the incident flux of light is very low. Unlike most vacuum tubes, they are not obsolete.The combination of high gain, low noise, high frequency response or, equivalently, ultra-fast response, and large area of collection has maintained photomultipliers an essential place in nuclear and particle physics, astronomy, medical diagnostics including blood tests, medical imaging, motion picture film scanning (telecine), radar jamming, and high-end image scanners known as drum scanners. Elements of photomultiplier technology, when integrated differently, are the basis of night vision devices.Semiconductor devices, particularly avalanche photodiodes, are alternatives to photomultipliers; however, photomultipliers are uniquely well-suited for applications requiring low-noise, high-sensitivity detection of light that is imperfectly collimated.