Rajaa
Hakutulokset: 0198529716
Rajaa
yksi hakutulos.
Accurate Clock Pendulums
sidottu,
2004,
englanti,
ISBN 9780198529712
The Shortt clock, made in the 1920s, is the most famous accurate clock pendulum ever known, having an accuracy of one second per year when kept at nearly constant temperature. …