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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Faraday as a Discoverer by John Tyndall: further. But though it has ceased to be a source of energy, the
attraction of gravity still acts as a force, which holds the earth
and weight together.
The same remarks apply to attracting atoms and molecules. As long
as distance separates them, they can move across it in obedience to
the attraction, and the motion thus produced may, by proper appliances,
be caused to perform mechanical work. When, for example, two atoms
of hydrogen unite with one of oxygen, to form water the atoms are
first drawn towards each other--they move, they clash, and then by
virtue of their resiliency, they recoil and quiver. To this
quivering motion we give the name of heat. Now this quivering
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