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Photon detectors count photons of light. A photon detector has some surface that absorbs photons and produces some effect (current, voltage) proportional to the number of photons absorbed.
A photovoltaic cell consists of a layer of semiconductor (like selenium, Hg-Cd-Te, Cu2O, etc.) sandwiched between two metallic electrodes, with the exposed electrode thin enough to be transparent. Photons of light are absorbed by the semiconductor, forming electrons and holes that create a current proportional to the number of photons absorbed.
A phototube uses the photoelectric effect to generate a current from absorbed light. Light is absorbed by a metallic surface with a low work function. Electrons are emitted and attracted to a positively biased anode. Electronics measure the current, which is proportional to the number of photons absorbed.
das
Wiki User
∙ 13y agoa photon is a discrete bundle of electromagnetic energy. photon is concntrated packet of energy which has no mass during rest only when photon collided with a free electron its frequency decrease change direction while the electron velocity increased & it changed its direction causing compton effect ...used also in making laser (light amplification by stimulated emmision of radiation)so photons due to multiple reflections moving in one direction with same velocity making laser....
Wiki User
∙ 7y agoJust expressing my personal understanding here. A photon can be considered as the vibrational energy with a certain frequency (the duality of light), and thus the photons with the same frequency can interact with each other by overlapping to achieve maximal magnitude of vibration. Assuming billions of the same-colored photons overlap the same way and form a single photo possessing gigantic amount of energy, once released to target, the photon could cause conceivable damage. In my opinion, a photon cannon should be different from laser gun where population inversion is required to achieve more excited state photon generating species. A photon cannon theoretically can be powered by electricity or light (laser). A photon cannon can be achieved by combining two mithrial hammers in the game dota to make the stygien desolator this is more commonly known as the photon cannon and results in gg
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Is a photon cannon real?
tape a bunch of flashlights together and rewire them so that you can turn them all on at once.Then get a focal lense that is big enough to fit over all of them. Get a mirror and reflect the light and there you go. Ninjas use Photon Cannons
How do you make a photon cannon?
To make a Photon Cannon, one must first understand what a photon is. A photon is a light particle, plain and simple. A Photon cannon would be something that shoots out photons, like a strong flashlight or a laser pointer. By combining two mitheral hammers that cost 1610 gold in the game dota on warcraft 3 plus and extra 1200 gold for the recipie and this creates a stygien desolator which is more commonly known as the photon cannon and normally results in gg(good game).
What does a photon cannon look like?
The simplest example is a laser pointer.
What is Einstein's photoelectric equation?
E(photon energy)=K.E+Work Function
Who Family of Annie Jump Cannon?
Annie Jump Cannon worked in many places, but Harvard was were she did most of her work. (:
How do you work a cannon in Minecraft tekkit?
Power it with redstone
Who did Henrietta swan Levitt work with?
Annie Cannon
How can strain energy do work?
It can do alot of work. Eg. When you use a cannon launcher or slingshots. We pull it using the rubber and the stored energy pushes the cannon ball or rock and attacks.
What is a photon How does it work What is a photon's part in magnetism?
What: a photon is the boson that carries the electromagnetic force.How: I'm not sure there is an answer to this, the particle is a boson and carries a specific quanta of energy.What part: it carries the electromagnetic force in both electric and magnetic interactions between the objects involved.
How can plants get engery form artificial light?
a photon is a photon is a photon
Where did Annie jump cannon do most of her work?
annie jump cannon was responsible for the photographic discovery of 5 novas about 300 vanable stars
Which is more energetic a red photon or a blue photon?
The energy of a photon is inversely propotional to its wavelength. The wavelength of a blue photon is less than that of a red photon. That makes the blue photon more energetic. Or how about this? The energy of a photon is directly proportional to its frequency. The frequency of a blue photon is greater than that of a red photon. That makes the blue photon more energetic. The wavelength of a photon is inversely proportional to its frequency. The the longer the wavelength, the lower the frequency. The shorter the wavelength, the higher the frequency.
