UNDULATORY a.
ons on the retina according to their amplitude and frequency, the sensation of brightness depending on the former, that of color on the latter. The undulations are supposed to take place, not in the direction of propagation, as in the air waves constituting sound, but transversely, and the various phenomena of refracti…
VARIABLE n.
where a steady wind is not expected, especially the parts between the trade-wind belts. Independent variable (Math.), that one of two or more variables, connected with each other in any way whatever, to which changes are supposed to be given at will. Thus, in the equation x2 - y2 = R2, if arbitrary changes are supposed…
VESTED a.
sts. Vested legacy (Law), a legacy the right to which commences in præsenti, and does not depend on a contingency; as, a legacy to one to be paid when he attains to twenty-one years of age is a vested legacy, and if the legatee dies before the testator, his representative shall receive it. Blackstone. -- Vested remain…