The Romance of Modern Chemistry
Forfatter: James C. Phillip
År: 1912
Forlag: Seeley, Service & Co. Limited
Sted: London
Sider: 347
UDK: 540 Phi
A Description in non-technical Language of the diverse and wonderful ways in which chemical forces are at work and of their manifold application in modern life.
With 29 illustrations & 15 diagrams.
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TWO METALS BETTER THAN ONE
tures at which the alloys freeze are represented by
lengths measured vertically. This is a very common
method of summarising the results of scientific investi-
gation and of showing the way in which one quantity
depends on or varies with another. An example of
such a use of curves is furnished by the card which
comes off an aneroid barometer at the end of a week.
On this card vertical distances represent the height of
the barometer, and horizontal distances represent intervals
of time. The curve traced on the card shows the way
in which the height of the barometer has varied during
the past week.
If, now, we similarly represent the way in which the
freezing-point of an alloy varies with its composition,
we should obtain, in many cases at least, a curve in
two branches, as shown in Fig. la. Careful investi-
gation has shown that these are the cases in which
chemical combination has not taken place. The solid
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