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What describes how well screen phosphor takes x-ray photons and converts them to visible light?
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What part of an image intensification tube converts the X-ray image into a visible image?
Input Phosphor. The x-ray image intensifier converts the transmitted x rays into a brightened, visible light image. Within an image intensifier, the input phosphor converts the x-ray photons to light photons, which are then converted to photoelectrons within the photocathode. The electrons are accelerated and focused by a series of electrodes striking the output phosphor, which converts the accelerated electrons into light photons that may be captured by various imaging devices.
Energy of visible light can be measured in organized packets called?
The energy of visible light can be measured in organized packets called photons. These photons have discrete values of energy, meaning there is exact amounts of energy these have, and don't vary in decimal places.
Why is there no substance that convert visible light to UV?
UV photons have more energy (less wavelength, higher frequency) than visible light photons. It is possible to convert photons to ones with less enery, but not the opposite.
Can photons of light be seen with the naked eye?
Since photons are the basic unit of electromagnetic radiation, and since visible light is electromagnetic radiation, yes, photons within the visible light spectrum can be seen with the naked eye.
What does Mercury do in a CFL?
Without the mercury in a CFL you wouldn't have light. The ballast in a CFL supplies initial current which excites the mercury which releases photons, or light. The mercury does not produce visible light, this happens only once the light passes through the phosphor coating on the inside of the bulb.
Do infrared photons or visible photons have longer wavelengths?
Visible radiation: 370-750 nm. Infrared radiation: 750 nm-300 μm These wavelenghts are not long.
Why do yellow highlighters tend to have a glow?
This is because it contains phosphor, a chemical that makes things glow. Take note: All elements glow but only phosphor is in the visible range.Phosphorus is the chemical element that has the symbol P and atomic number 15.Phosphorus compounds are used in explosives, nerve agents, friction matches, fireworks, pesticides, toothpastes, and detergents.Phosphorus doesn't actually glow, it converts light into heat. All elements have this effect, but phosphorus' light emission is in the visible range.
Why are the photons that emerge from the Sun's surface visible-light photons and infrared-light photons rather than gamma-ray photons?
Photons do not come in different types like infared-photons etc. they are just the wavelength that the photons are at and nuclear fusion just happens to emit photons at a particular wavelength
Which photons have greater energy those associated with microwaves or those asociated with visible light?
Visible light
In what form solar energy leaves the core of the sun?
visible and invisible light
Why phosphor screen is used in night vision goggles?
In a night vision tube, the object of the tube is to convert incoming light particles (photons) to electrons. The electrons are then multiplied many times by the microchannel plate inside the tube. It is these multiplied electrons that are the output 'signal'. However, since your eye cannot see electrons, they are converted back to visible light by way of the phosphor screen which 'lights up' when energized by the electrons.
How do blacklight tattoos work?
Black lights Emit safe UVA light and some violet light. These on the more energetic section of the electromagnetic spectrum. Some chemicals will absorb the energy from the UVA light and almost immediately re-emit the light. Thanks to the laws of Thermodynamics some energy is lost in this transaction and the light produced by the chemicals are in the visible spectrum. Black light tattoo inks contain phosphors. A phosphor is any substance that emits visible light in response to some sort of radiation. A phosphor converts the energy in the UV radiation from a black light into visible light.
