HELIOSTATA

, an instrument invented by Dr. Gravesande, and so called from its property of fixing the sun-beam in one position, viz, in a horizontal direction across the dark chamber while it is used. See Gravesande's Physices Element. Mathematica, tom. 2, p. 715 ed. 3tia 1742, for an account of the principles, construction and use of this instrument.

HELISPHERICAL Line, is the Rhumb-line in Navigation; being so called, because on the globe it winds round the pole helically or spirally, coming still nearer and nearer to it.

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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.

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HEIGHT
HELIACAL
HELIOCOMETES
HELIOMETER
HELIOSCOPE
* HELIOSTATA
HELIX
HEMISPHERE
HEMITONE
HENDECAGON
HENIOCHAS