(where x is always measured as +_ve_ or -_ve_ floating effect), there is
obtained the equation:
D1 x ( W1 + x)
D = --------------- .
W1
[TEX: D = \frac{D_1 \times (W_1 +x)}{W_1}]
The results obtained with metallic silver are perhaps the most
interesting, mainly from the fact that the metal melts at a higher
temperature, which was determined with great care by the illustrious
physicist and metallurgist, the late Henri St. Claire Deville, whose
latest experiments led him to fix the melting point at 940° Cent. The
authors of the paper showed that the density of the fluid metal was 9.51
as compared with 10.57, the density of the solid metal. Taking their
results generally, it is found that the change of volume of the
following metals in passing from the solid to the liquid state may be
thus stated:
Specific Specific
Metal. Gravity, Gravity, Percentage of
Solid. Liquid. Change.
Bismuth 9.82 10.055 Decrease of volume 2.3
Copper 8.8 8.217 Increase " 7.1
Lead 11.4 10.37 " " 9.93
Tin. 7.5 7.025 " " 6.76
Zinc 7.2 6.48 " " 11.10
Silver 10.57 9.51 " " 11.20
Iron 6.95 6.88 " " 1.02
* * * * *