334
Molesworth’s pocket-book
Electrical Formula:, by Päget Higgs, LL.D., C.E.,
and R. S. Bkough—continued.
solution of any of its salts by a current of C
webers in t seconds is
n = 0-00001 a C t grammes,
where a is the atomic weight of the metal referred
to. that of hydrogen as unity. One weber of elec-
tricity decomposes ‘00142 grain of water.
A current strength
which Is measured in
must be multiplied by — to
reduce it to — per minute;
per minute Cubic c.m. water- gases. Milli- Milli- grams grams water, copper Milli- grams silver. Mag- netic units.
Cubic c.m. water-gases 0-5363 1’889 6'432 0-9579
Milligrams water .. 1-865 .. 3’522 11-99 1-78Ö
ft copper .. 0'5294 0-28^9 .. 3-405 0-5071
„ silver .. 0-1555 0-0834 0-2937 0-1489
Magnetic measure:
M. m. * mgr. / 1-044 0-55991-972 6-714
sec2 )
{Kohlrausch.')
15. Ihe heat developed in a circuit of resistance
r dims in t seconds by u current of O webers is
H = 0-2405 C2 r t calories.
16. The work done in a circuit of resistance
r ohms in t seconds by a current of C webers is
W = 101 ’92 C2 r t grammetres.
17. The eleciromotive force of Daniell’s element