Physics, 25.12.2019 03:31, chrisssrutter
Band gaps
the energy gaps between the valence and conduction bands are called band gaps. for silicon, the band gap is 1.1ev; for fused silica glass, it is 9.3ev.
part c
glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass?
express your answer as an integer.
Answers: 2
Physics, 21.06.2019 23:00, xojade
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Physics, 22.06.2019 17:30, madisonnewby5021
Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=
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Band gaps
the energy gaps between the valence and conduction bands are called band gaps....
the energy gaps between the valence and conduction bands are called band gaps....
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