Comparisons of ET(solar), ET(lunar), UT, and TDT
1988 ◽
Vol 128
◽
pp. 413-418
SummaryA fundamental dynamical scale, ET(solar), was formed from absolute, meridian circle observations, from 1835 to 1982. At 1967.0 the ET(solar) and SI seconds were equal to 1 part in 109 and, from Morrison's (1979 a) ET(lunar) scale, the ET(ILE) and SI seconds were equal to 1 part in 1010. The long term fluctuation in the Earth's rotation has been parabolic, instead of sinusoidal, for at least 350 y.
1982 ◽
pp. 210-221
◽
Philosophical Transactions of the Royal Society of London Series A Physical and Engineering Sciences
◽
1995 ◽
Vol 351
(1695)
◽
pp. 165-202
◽
Keyword(s):
1966 ◽
Vol 25
◽
pp. 323-325
◽
1990 ◽
pp. 203-203