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How does an electric current produce light?
By heating a metal wire called a filament. In a light bulb (lamp) the electric current flows through a tungsten filament which glows white hot giving off light.
What properties of light cannot be described by using the wave model of light?
Photo electric emisson or photo electric effect
Who discover photo electric effect and what date?
The photo electric effect was explained by Einstein in 1905 when he theorized that light could transfer its energy like a particle and knock electrons out of metals. But the actual effect had been observed by a number of scientists since 1887, they just couldn't come up with a satisfactory theory that explained everything they observed. I believe he got the Nobel Prize for his photo electric effect theory, although he is more famous for his Relativity theories.
What characteristic of light did Einstein employ to explain the photo electric effect?
The particle nature of light
What are the applications of photoelectric effect?
The major applications of photo electric effect are in power satellites, solar cells solar powered calculators, solar cookers etc.
Electrons ejected in the photoelectric effect are called?
Photo electrons. So current due to these photo electrons is named as photo electric current.
What is the ability of light to cause electron movement and electric current?
The photo-electric effect is the ability of light to cause the movement of electrons, which is called an electric current.
What is the difference between mosfet and photo diode?
the current in mosfet is controlled by electric field where as in poto diode is controlled by intensity of light
Effect of intensity?
The photoelectric current is directly proportional to intensity.It also depends upon frequency, but frequency more than "THRESHOLD FREQUENCY" does not effect the current.The no. of electrons emitted per second by a photo-sensitive surface is directly proportional to the intensity of the incident radiations.So,the photoelectric current depends upon the intensity of the incident radiations.
How does an electric current produce light?
By heating a metal wire called a filament. In a light bulb (lamp) the electric current flows through a tungsten filament which glows white hot giving off light.
What is photo electric?
when photons got enough energy and getting out from that meterial electric current produced from that movement called photo electric.
What properties of light cannot be described by using the wave model of light?
Photo electric emisson or photo electric effect
What are the proofs of the particles of nature of light?
photo electric effect,compton's effect
What are the proofs of the particles nature of light?
photo electric effect,compton's effect
What was einsteins explantation for the photoelctric effect?
Einstein proposed that light incident on a photo-electric material (indeed, all light), is composed of chunks (he and Max Planck used the term "quanta," the term eventually became "photons"), and that the amount of energy in each chunk was equal to the frequency of the light times Planck's Constant. This explained many puzzling facts about the photo-electric effect, such as (1) why current began to flow almost immediately, even for very low intensity light, (2) why light, no matter how intense, had to be above a certain frequency to get any photo-electric effect, and (3) why higher frequency light resulted in more energetic electrons leaving the material.
What has the author Allen Goodrich Shenstone written?
Allen Goodrich Shenstone has written: 'The effect of current on the photo-electric sensitivity of metals ..' -- subject(s): Metals, Photoelectricity
What is the difference between photo electric effect and compton effect?
The photo-electric effect causes a current to pass between two plates that already have a voltaic potential difference.the photovoltaic effect causes a voltage to grow between two plates that don't already have one (or changes the applied voltage to something else). There is no current.In photo electric effect,When light(photon) Strikes on the one plate,electron in outershell of atom is ejected by absorbing the light.And electron can move from its plate to other plate if energy of photon is satisfy the break force of surface into electron and potential energy of two plates.So current is generated.In photo voltaic effect,When light(photon) Strikes on the one plate, electron in outershell of atom is go up to new energy level by absorbing the light. So no charge carriers move.Therefore no current.
