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nceived as situated. -- Plane iron, the cutting chisel of a joiner's plane. -- Plane of polarization. (Opt.) See Polarization. -- Plane of projection. (a) The plane on which the projection is made, corresponding to the perspective plane in perspective; -- called also principal plane. (b) (Descriptive Geom.) One of t…

cating the hour of the day on an hour circle, by being turned toward the plane of maximum polarization of the light of the sky, which is always 90º from the sun. -- Polar coördinates. See under 3d Coördinate. -- Polar dial, a dial whose plane is parallel to a great circle passing through the poles of the earth. Math.…

An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray.

The art or process of measuring the polarization of light.

Susceptible of polarization.

Wm. Nicol, of Edinburgh, who first proposed it.] (Opt.) An instrument for experiments in polarization, consisting of a rhomb of Iceland spar, which has been bisected obliquely at a certain angle, and the two parts again joined with transparent cement, so that the ordinary image produced by double refraction is thrown…

Producing rotation of the plane of polarization; as, the rotatory power of bodies on light. See the Note under polarization. Nichol.

air waves constituting sound, but transversely, and the various phenomena of refraction, polarization, interference, etc., are attributable to the different affections of these undulations in different circumstances of propagation. It is computed that the frequency of the undulations corresponding to the several color…

an odor of old cheese. Active valeric acid, a metameric variety which turns the plane of polarization to the right, although formed by the oxidation of a levorotatory amyl alcohol.