polaroid

Alternative letter-case form of polaroid.

The doctor took a Polaroid.

A sheet of plastic embedded with microscopic crystals of herapathite or similarly acting material, so that light passing through it is polarized.

In the simplest form of this system, applicable to many microscopes, the substage polar consists only of semicircles of polaroid orientated to give respective planes of polarisation at right angles. Polaroids over the eyepieces are orientated so extinguish the inner halves of the exit pupils.

If there is no sample in the cell, and the second polaroid is rotated until it is at right angles to the first, the observer will see no light.

Spectacles made with lenses of this material, once used to view certain 3-D movies, now used as sunglasses.

She went to see BWANA DEVIL and, after donning the polaroids, saw correctly.

[…]I discovered my old woggle in a cardboard box, together with my Herald Learn-To-Swim certificate (25 yards without touching the bottom), a copy of the Eltham High School magazine and a pair of polaroids I pinched from a 3-D screening of Bwana Devil in 1953.

A camera that develops its own film.

A print from such a camera.

Simons slides a pair of Polaroids across the table. They depict a couple of color-lit high schoolers standing in what appears to be an empty warehouse.

To photograph with a polaroid camera.