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light

# The sun is hot enough to peak in the visible spectrum

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Unformatted text preview: se now that the two filters are offset by some angle θ. Regardless of the angle, the first filter blocks half the light. If θ = 0, the second filter has no effect. If θ = 90°, the second filter blocks the other half of the light. In general, when polarized light with an electric field of amplitude E passes through the second filter, the amplitude will drop to E cosθ. Furthermore, since the energy a wave carries is proportional to the square of its amplitude, the intensity of the light will be the original intensity multiplied by cos 2θ. Blocking Light Continued on Next Continued on Next “Twisting” of Light We know that if θ = 90° between two filters, then no light will make it past the second one. At other angles light will pass through both, changing the orientation of its electric field each time. So, what if we arranged several polarizing filters so that the angle between any two consecutive filters is less than 90°? The answer is that light twists its way through the filters, even if th...
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