Accelerators
... accelerates particles when they cross evacuated tube gaps, particles are screened from e.m. wave when electric field would decelerate ...
... accelerates particles when they cross evacuated tube gaps, particles are screened from e.m. wave when electric field would decelerate ...
File - King`s Senior Science
... positive terminal to the negative terminal. This convention is credited to Benjamin Franklin who theorized that electric current was due to a positive charge moving from the positive terminal to the negative terminal. However, it was later discovered that it is the movement of the negatively charged ...
... positive terminal to the negative terminal. This convention is credited to Benjamin Franklin who theorized that electric current was due to a positive charge moving from the positive terminal to the negative terminal. However, it was later discovered that it is the movement of the negatively charged ...
Carrier plasma shift in GaInAsP photonic crystal point defect cavity
... Fig. 3b and c. The resonant peak blue-shifted by <1 nm for an absorbed power of 13 mW and 5.6 nm for 850 mW. Considering the surface recombination at airholes [7] and assuming a carrier lifetime of 4 ns, a pump power of 850 mW corresponds to a carrier density of 5.7 1017 cm3. It is expected to pr ...
... Fig. 3b and c. The resonant peak blue-shifted by <1 nm for an absorbed power of 13 mW and 5.6 nm for 850 mW. Considering the surface recombination at airholes [7] and assuming a carrier lifetime of 4 ns, a pump power of 850 mW corresponds to a carrier density of 5.7 1017 cm3. It is expected to pr ...
Poster 1
... pairs interfere at PBS, so lower curve is below the red line Thus we have observed some polarization entanglement 1000s of data per curve, taken while sweeping the cavity ...
... pairs interfere at PBS, so lower curve is below the red line Thus we have observed some polarization entanglement 1000s of data per curve, taken while sweeping the cavity ...
Circuits_-_Parallel_with_Ohms_Law.doc
... conductors such as wires, it has long been the convention to take the direction of electric current as if it were the positive charges which are moving. Some texts reverse this convention and take electric current direction as the direction the electrons move, an obviously more physically realistic ...
... conductors such as wires, it has long been the convention to take the direction of electric current as if it were the positive charges which are moving. Some texts reverse this convention and take electric current direction as the direction the electrons move, an obviously more physically realistic ...
VCE Physics exam PDF
... The diffraction pattern is determined by wavelength and is similar to that from X-rays only if the de Broglie wavelength of the electron is similar to the wavelength of the X-rays. Note that electrons do NOT have a frequency NOR do they travel at the same speed as the X-rays. ...
... The diffraction pattern is determined by wavelength and is similar to that from X-rays only if the de Broglie wavelength of the electron is similar to the wavelength of the X-rays. Note that electrons do NOT have a frequency NOR do they travel at the same speed as the X-rays. ...
Electron Microscopy
... Ratios between 5-7 are required to identify features with good enough confidence ...
... Ratios between 5-7 are required to identify features with good enough confidence ...
Describe an atom. What is it made up of?
... The nucleus of an atom consists of protons (positively charged) and neutrons. ...
... The nucleus of an atom consists of protons (positively charged) and neutrons. ...
Design of beam splitters and microlasers using
... the construction of a micro laser using a resonant multicavity. A multi-cavity micro laser would have two main advantages: (i) the multi-cavity array would enhance considerably the emission intensity compared to a micro laser constructed with one cavity only, and (ii) the micro laser would emit seve ...
... the construction of a micro laser using a resonant multicavity. A multi-cavity micro laser would have two main advantages: (i) the multi-cavity array would enhance considerably the emission intensity compared to a micro laser constructed with one cavity only, and (ii) the micro laser would emit seve ...
electric current ppt
... • Unit of current is ampere or amp, abbreviated A, symbol in formulas: I • 1 ampere = 1 coulomb/second of charge flowing through a conductor • Amount of current depends on potential difference or voltage (pressure) and resistance to flow of charges ...
... • Unit of current is ampere or amp, abbreviated A, symbol in formulas: I • 1 ampere = 1 coulomb/second of charge flowing through a conductor • Amount of current depends on potential difference or voltage (pressure) and resistance to flow of charges ...
experiment outlines - Brown University Wiki
... Millikan Oil Drop Experiment (0030): The “oil drops” of this classical experiment have become tiny (600 micron) latex droplets that are sprayed into a small chamber. A vertical electric field moves these particles, when they ionize, upward or downward, while gravity also acts on them. Information c ...
... Millikan Oil Drop Experiment (0030): The “oil drops” of this classical experiment have become tiny (600 micron) latex droplets that are sprayed into a small chamber. A vertical electric field moves these particles, when they ionize, upward or downward, while gravity also acts on them. Information c ...
this comprehension exercise - Tasker Milward Physics Website
... Simple explanation of the photoelectric effect The photoelectric effect occurs when electrons escape from a metal as a result of photons hitting the surface of the metal. In order to escape, electrons need to be given sufficient energy to break free from the attractive forces containing them inside ...
... Simple explanation of the photoelectric effect The photoelectric effect occurs when electrons escape from a metal as a result of photons hitting the surface of the metal. In order to escape, electrons need to be given sufficient energy to break free from the attractive forces containing them inside ...
______ is the ability to do work
... Energy: _______ is the ability to do work. There are many different kinds of energy. When you hold an object up off the ground, the object has ______ energy. When you drop the object, this energy is not lost, but is transformed into _______ energy. When the object hits the ground, all its energy is ...
... Energy: _______ is the ability to do work. There are many different kinds of energy. When you hold an object up off the ground, the object has ______ energy. When you drop the object, this energy is not lost, but is transformed into _______ energy. When the object hits the ground, all its energy is ...
Op Amps II, Page R C -
... circuit nearly oscillates. See how close you can get. Notice how oscillations grow and die exponentially. Find the resonant frequency by feeding in a sine signal from a function generator. (You may need to decrease the input voltage considerably to avoid saturating the filter near resonance.) Check ...
... circuit nearly oscillates. See how close you can get. Notice how oscillations grow and die exponentially. Find the resonant frequency by feeding in a sine signal from a function generator. (You may need to decrease the input voltage considerably to avoid saturating the filter near resonance.) Check ...
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.