Unpolarized light of intensity 25.8 W/cm2 is incident on two polarizing filters. The axis of the first filter is at an angle of 25.6 ∘ counterclockwise from the vertical (viewed in the direction the light is traveling) and the axis of the second filter is at 57.0 ∘ counterclockwise from the vertical. What is the intensity of the light after it has passed through the second polarizer?

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

Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?

Is the number of complete movements of a wave per second.