Hour 1 Atoms to frequency
... We must understand that both of these are happening at the same time, it is only a matter of how we look at what is happening. If we take a bottle of water with a narrow neck and dump it into a sink do you see bubbles flowing upwards or water flowing downward? One can not happen without the other. S ...
... We must understand that both of these are happening at the same time, it is only a matter of how we look at what is happening. If we take a bottle of water with a narrow neck and dump it into a sink do you see bubbles flowing upwards or water flowing downward? One can not happen without the other. S ...
Ch37 - MyCourses
... • The zero-loss peak is very intense, which can be both an advantage and a hindrance • The intensity range is enormous; this graph uses a logarithmic scale as the only way to display the whole spectrum • The low-loss regime containing the plasmon peak is relatively intense • the element-characterist ...
... • The zero-loss peak is very intense, which can be both an advantage and a hindrance • The intensity range is enormous; this graph uses a logarithmic scale as the only way to display the whole spectrum • The low-loss regime containing the plasmon peak is relatively intense • the element-characterist ...
Image Intensifier User Guide
... associated with the gap between the photocathode and MCP, where R is the resistance of the photocathode and C is the capacitance of the gap between the photocathode and MCP. Multi-alkali photocathodes generally have a lower resistance than Bialkali or Solar Blind cathodes. To achieve ultra-fast gati ...
... associated with the gap between the photocathode and MCP, where R is the resistance of the photocathode and C is the capacitance of the gap between the photocathode and MCP. Multi-alkali photocathodes generally have a lower resistance than Bialkali or Solar Blind cathodes. To achieve ultra-fast gati ...
OKANAGAN COLLEGE 1 Semiconductor Theory
... The positive terminal of the voltage source is connected to the p-material, and the negative terminal of the voltage source is connected to the n-material. In this case, the negative terminal will drive free electrons in the n-material away from it towards and then across the junction. When in the p ...
... The positive terminal of the voltage source is connected to the p-material, and the negative terminal of the voltage source is connected to the n-material. In this case, the negative terminal will drive free electrons in the n-material away from it towards and then across the junction. When in the p ...
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.