Milli-oerstedt.
A proposed but not adopted unit of current; one-thousandth of an
oerstedt. It is equal to one-thousandth of an ampere.
[Transcriber's note: oersted: 1. CGS unit of magnetic intensity, equal
to the magnetic pole of unit strength when undergoing a force of one
dyne in a vacuum. 2. Formerly, the unit of magnetic reluctance equal to
the reluctance of a centimeter cube of vacuum between parallel
surfaces.]
mm.
Contraction for millimeters.
Molar.
Referring to phenomena of mass as gravitation. Mechanics
generally treats of molar laws and phenomena.
[Transcriber's note: Molar, or mole, often refers to a quantity of a
substance containing an Avagadro number (6.02E23) of molecules--a weight
equal to the atomic weight of the molecule. For example, a mole of
hydrogen (H2) is 2.015 grams; sodium chloride (NaCl) is 58.443 grams.]
Molar Attraction.
The attraction of mass for mass; gravitation. Synonyms--Mass
Attraction--Gravitation.
Molecular Affinity.
The attraction of molecules for each other as seen in the formation of
double salts, the combining of water of crystallization with a salt, and
in other cases; a phase of affinity belonging to chemistry, although
outside of true atomic attraction.
Molecular Attraction.
The attraction of molecules; physical affinity. Cohesion, the attraction
of similar molecules for each other, and adhesion, that of dissimilar
molecules, are examples. This should be distinguished from molecular
affinity, a phase of chemical force.
Molecular Bombardment.
When a gas contained in a vessel is brought to a sufficient state of
rarefaction the molecules cease to be subject to the laws of diffusion,
but move back and forth in straight lines from side to side of the
vessel. Their courses can be affected by electric discharge, which can
cause them to all impinge upon one of the electrodes, the positive one,
producing luminous effects. The path, if referred to the negative
electrode, tends to be normal to its surface, so that the resultant path
may be curved, as the stream of molecules go to the positive electrode.
The fanciful name of molecular bombardment is given to the phenomenon,
the luminous effect being attributed to the impinging of the molecules
against the positive electrode as they are projected from the positive.
The course of the molecules is comparable to the stream of carbon
particles from the positive to the negative electrode in an arc lamp.
(See Matter, Radiant.)
Molecular Chain.
The theoretical rows of molecules supposed to extend from anode to
cathode in an electrolytic cell (see Cell, Electric--Grothüss'
Hypothesis) are called molecular chains.