polarization involves the use of a polaroid filter. Polaroid filters are made of a special material that is capable of blocking different amounts of light.
When light is transmitted through a Polaroid filter, it emerges with one-half the intensity it emerges as polarized light.
Polarization of light by use of a Polaroid filter are used to look through and view objects. The filter does not distort the shape or dimensions of the object; it merely serves to produce a dimmer image of the object since one-half of the light is blocked as it passed through the filter. A pair of filters is often placed back to back in order to view objects looking through two filters. By slowly rotating the second filter, an orientation can be found in which all the light from an object is blocked and the object can no longer be seen when viewed through two filters.
the light was polarized upon passage through the first filter blocked by the second filter since its polarization filter is aligned in a horizontal direction.
While you are unable to see the axes on the filter, you will know when the axes are aligned perpendicular to each other because with this orientation, all light is blocked. So by use of two filters, one can completely block all of the light that is incident upon the set; this will only occur if the polarization axes are rotated such that they are perpendicular to each other.
we ended the class by working on our unit reviews.
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