Pickle Plasma - Instructables
... The free sodium atoms are also involved with colliding hot electrons and receive sufficient energy to cause one or more of the sodium's outer electrons to get bumped up to a higher orbit. Very quickly after this happens the bumped up electron returns to it's original orbit. In doing this the electro ...
... The free sodium atoms are also involved with colliding hot electrons and receive sufficient energy to cause one or more of the sodium's outer electrons to get bumped up to a higher orbit. Very quickly after this happens the bumped up electron returns to it's original orbit. In doing this the electro ...
Understand Waveguides
... transmission lines of any substantial length operating in standard TEM mode become impractical. Lines small enough in cross-sectional dimension to maintain TEM mode signal propagation for microwave signals tend to have low voltage ratings, and suffer from large, parasitic power losses due to conduct ...
... transmission lines of any substantial length operating in standard TEM mode become impractical. Lines small enough in cross-sectional dimension to maintain TEM mode signal propagation for microwave signals tend to have low voltage ratings, and suffer from large, parasitic power losses due to conduct ...
Photoelectric effect
... will have a certain amount of kinetic energy. The amount depends on the location of the metal that the electron came from At or close to the surface – high energy Well below the surface – low energy ...
... will have a certain amount of kinetic energy. The amount depends on the location of the metal that the electron came from At or close to the surface – high energy Well below the surface – low energy ...
Electricity Model - Don`t Trust Atoms
... Electricity Electrons – carry electrical energy around the circuit Cell – gives energy to the electrons (“pushes” them around the circuit) Wires – the electrons travel through the wires around the circuit Light Bulb – electrons give the bulb energy and the bulb uses the energy to transfer to heat an ...
... Electricity Electrons – carry electrical energy around the circuit Cell – gives energy to the electrons (“pushes” them around the circuit) Wires – the electrons travel through the wires around the circuit Light Bulb – electrons give the bulb energy and the bulb uses the energy to transfer to heat an ...
X rays - schoolphysics
... accelerated by voltages usually of the order of 20 kV, giving relatively long-wavelength Xrays called ‘soft’ X-rays. With a cold cathode, however, the voltages required to cause electron emission are much greater - around 100 kV - and these tubes produce ‘hard’ X-rays of much shorter wavelength, bet ...
... accelerated by voltages usually of the order of 20 kV, giving relatively long-wavelength Xrays called ‘soft’ X-rays. With a cold cathode, however, the voltages required to cause electron emission are much greater - around 100 kV - and these tubes produce ‘hard’ X-rays of much shorter wavelength, bet ...
X rays - schoolphysics
... accelerated by voltages usually of the order of 20 kV, giving relatively long-wavelength Xrays called ‘soft’ X-rays. With a cold cathode, however, the voltages required to cause electron emission are much greater - around 100 kV - and these tubes produce ‘hard’ X-rays of much shorter wavelength, bet ...
... accelerated by voltages usually of the order of 20 kV, giving relatively long-wavelength Xrays called ‘soft’ X-rays. With a cold cathode, however, the voltages required to cause electron emission are much greater - around 100 kV - and these tubes produce ‘hard’ X-rays of much shorter wavelength, bet ...
The Drude Model An intuitive picture of electron motion
... This model shows us that electric fields cause charges to move (electric current) by the Lorentz force, and electron scattering causes resistance. In Module 2 there is a discussion about whether ‘elect ...
... This model shows us that electric fields cause charges to move (electric current) by the Lorentz force, and electron scattering causes resistance. In Module 2 there is a discussion about whether ‘elect ...
File - The Physics Doctor
... 4) Red light had no effect, but ultraviolet caused the gold leaf to go flat again Why is it important that the gold leaf be situated in a vacuum? ...
... 4) Red light had no effect, but ultraviolet caused the gold leaf to go flat again Why is it important that the gold leaf be situated in a vacuum? ...
II.3. DETERMINATION OF THE ELECTRON SPECIFIC CHARGE BY
... then it is possible that the electrons can never reach the anode. This happens when their trajectories become circular, with the radius r = R/2. In this situation the electrons form a space charge region around the cathode, screening it, and the anodic current practically drops to zero. We will try ...
... then it is possible that the electrons can never reach the anode. This happens when their trajectories become circular, with the radius r = R/2. In this situation the electrons form a space charge region around the cathode, screening it, and the anodic current practically drops to zero. We will try ...
Klystron
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian, which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons are used as output tubes in UHF television transmitters, satellite communication, and radar transmitters, and to generate the drive power for modern particle accelerators.In the klystron, an electron beam interacts with the radio waves as it passes through resonant cavities, metal boxes along the length of the tube. The electron beam first passes through a cavity to which the input signal is applied. The energy of the electron beam amplifies the signal, and the amplified signal is taken from a cavity at the other end of the tube. The output signal can be coupled back into the input cavity to make an electronic oscillator to generate radio waves. The gain of klystrons can be high, 60 dB (one million) or more, with output power up to tens of megawatts, but the bandwidth is narrow, usually a few percent although it can be up to 10% in some devices.A reflex klystron is an obsolete type in which the electron beam was reflected back along its path by a high potential electrode, used as an oscillator.The name klystron comes from the stem form κλυσ- (klys) of a Greek verb referring to the action of waves breaking against a shore, and the suffix -τρον (""tron"") meaning the place where the action happens. The name ""klystron"" was suggested by Hermann Fränkel, a professor in the classics department at Stanford University when the klystron was under development.