Animal heat, Blood heat, Capacity for heat, etc. See under Animal,
Blood, etc. -- Atomic heat (Chem.), the product obtained by multiplying
the atomic weight of any element by its specific heat. The atomic heat
of all solid elements is nearly a constant, the mean value being 6.4.
-- Dynamical theory of heat, that theory of heat which assumes it to
be, not a peculiar kind of matter, but a peculiar motion of the
ultimate particles of matter. Heat engine, any apparatus by which a
heated substance, as a heated fluid, is made to perform work by giving
motion to mechanism, as a hot-air engine, or a steam engine. -- Heat
producers. (Physiol.) See under Food. -- Heat rays, a term formerly
applied to the rays near the red end of the spectrum, whether within or
beyond the visible spectrum. -- Heat weight (Mech.), the product of any
quantity of heat by the mechanical equivalent of heat divided by the
absolute temperature; -- called also thermodynamic function, and
entropy. -- Mechanical equivalent of heat. See under Equivalent. --
Specific heat of a substance (at any temperature), the number of units
of heat required to raise the temperature of a unit mass of the
substance at that temperature one degree. -- Unit of heat, the quantity
of heat required to raise, by one degree, the temperature of a unit
mass of water, initially at a certain standard temperature. The
temperature usually employed is that of 0∞ Centigrade, or 32∞
Fahrenheit.
Heat (ht), v. t. [imp. & p. p. Heated; p. pr. & vb. n. Heating.] [OE.
heten, AS. htan, fr. ht hot. See Hot.] 1. To make hot; to communicate
heat to, or cause to grow warm; as, to heat an oven or furnace, an
iron, or the like.
Heat me these irons hot.
Shak.