Electricity Unit Notes: pp
... iii) Materials such as ceramic, rubber, and wood are examples as well. b) ___________- A material where electrons can easily move from place to place. i) These are the most of the elements on the periodic table. ii) Examples: copper, gold, aluminum, silver, and silicon (semiconductor). c) __________ ...
... iii) Materials such as ceramic, rubber, and wood are examples as well. b) ___________- A material where electrons can easily move from place to place. i) These are the most of the elements on the periodic table. ii) Examples: copper, gold, aluminum, silver, and silicon (semiconductor). c) __________ ...
franck-hertz apparatus
... When UG2K reaches the first excitation potential of the argon atom, electrons collide with argon atoms near the second grid in an inelastic collision, and transfer the total energy obtained in the accelerating field to the argon atoms, exciting them from the ground state to the first excitation stat ...
... When UG2K reaches the first excitation potential of the argon atom, electrons collide with argon atoms near the second grid in an inelastic collision, and transfer the total energy obtained in the accelerating field to the argon atoms, exciting them from the ground state to the first excitation stat ...
Anode
... anode side must travel a greater distance through the target before exiting. This results in greater absorption by the target and this less intensity on the anode side. ...
... anode side must travel a greater distance through the target before exiting. This results in greater absorption by the target and this less intensity on the anode side. ...
doc
... thermionic emission at the heated cathode and focuses it into a thin beam by the control grid (or “Wehnelt cylinder”). ...
... thermionic emission at the heated cathode and focuses it into a thin beam by the control grid (or “Wehnelt cylinder”). ...
Concept Lecture Outline – Electricity
... b. Any break will cause all devices to go out. c. The more devices in series, the less energy each one receives. 3. Parallel circuits a. Have separate branches for current to move through. b. A break in one branch does not affect devices in other branches. c. Every device gets the same amount of ene ...
... b. Any break will cause all devices to go out. c. The more devices in series, the less energy each one receives. 3. Parallel circuits a. Have separate branches for current to move through. b. A break in one branch does not affect devices in other branches. c. Every device gets the same amount of ene ...
Understand Waveguides
... 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 conductor "skin" and dielectric effects. Fortunately, though, at these short wavelengths t ...
... 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 conductor "skin" and dielectric effects. Fortunately, though, at these short wavelengths t ...
Charge to Mass Ratio of the Electron
... second law, to mass times acceleration, only the ratio of charge to mass can be determined by observing the motion of the particle in electric and magnetic fields. In this experiment the charge-‐to-‐m ...
... second law, to mass times acceleration, only the ratio of charge to mass can be determined by observing the motion of the particle in electric and magnetic fields. In this experiment the charge-‐to-‐m ...
Electric Current
... resist the flow of electrons and convert electrical energy to other forms of energy ◦ Resistors are used to reduce the flow of a current through all or part of a circuit Help protect more delicate electronic components Example- used to computers ...
... resist the flow of electrons and convert electrical energy to other forms of energy ◦ Resistors are used to reduce the flow of a current through all or part of a circuit Help protect more delicate electronic components Example- used to computers ...
Electron diffraction tube and mounting 06721
... The evacuated electron diffraction tube contains an electron beam generating system, of which a schematic representation is given in figure 2. Electrons coming out of an incandescent cathode K (cathode heating H) are accelerated through the electric field generated by the electrode system G1...G4 an ...
... The evacuated electron diffraction tube contains an electron beam generating system, of which a schematic representation is given in figure 2. Electrons coming out of an incandescent cathode K (cathode heating H) are accelerated through the electric field generated by the electrode system G1...G4 an ...
Cavity magnetron
The cavity magnetron is a high-powered vacuum tube that generates microwaves using the interaction of a stream of electrons with a magnetic field while moving past a series of open metal cavities (cavity resonators). Bunches of electrons passing by the openings to the cavities excite radio wave oscillations in the cavity, much as a guitar's strings excite sound in its sound box. The frequency of the microwaves produced, the resonant frequency, is determined by the cavities' physical dimensions. Unlike other microwave tubes, such as the klystron and traveling-wave tube (TWT), the magnetron cannot function as an amplifier, increasing the power of an applied microwave signal, it serves solely as an oscillator, generating a microwave signal from direct current power supplied to the tube.The first form of magnetron tube, the split-anode magnetron, was invented by Albert Hull in 1920, but it wasn't capable of high frequencies and was little used. Similar devices were experimented with by many teams through the 1920s and 30s. On November 27, 1935, Hans Erich Hollmann applied for a patent for the first multiple cavities magnetron, which he received on July 12, 1938, but the more stable klystron was preferred for most German radars during World War II. The cavity magnetron tube was later improved by John Randall and Harry Boot in 1940 at the University of Birmingham, England. The high power of pulses from their device made centimeter-band radar practical for the Allies of World War II, with shorter wavelength radars allowing detection of smaller objects from smaller antennas. The compact cavity magnetron tube drastically reduced the size of radar sets so that they could be installed in anti-submarine aircraft and escort ships.In the post-war era the magnetron became less widely used in the radar role. This was because the magnetron's output changes from pulse to pulse, both in frequency and phase. This makes the signal unsuitable for pulse-to-pulse comparisons, which is widely used for detecting and removing ""clutter"" from the radar display. The magnetron remains in use in some radars, but has become much more common as a low-cost microwave source for microwave ovens. In this form, approximately one billion magnetrons are in use today.