When this pair of polaroid film squares are aligned, light passes through them appearing much as it would if viewed through sunglasses. However, if one square is rotated 90 degrees, no light passes through at all! A great way to demonstrate the principles of polarization and the wave properties of light.
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We are currently unable to calculate your contract price for this item. List price is being displayed temporarily. When your order is processed, you will be invoiced at your contract price even though list price is displayed now