Galileo’s most important contribution to astronomy was his
a. discovery of evidence that the s...
Physics, 22.10.2019 00:00 PLEASEHELP4528
Galileo’s most important contribution to astronomy was his
a. discovery of evidence that the sun is the center of the solar system.
b. set of calculations of the size of each of the planets.
c. discovery of the planet mars.
d. description of the behavior of moving objects.
Answers: 1
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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
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