Credit:
Explanation:
Sir Edmond Halley was quite a discoverer. Born in 1656, he computed
in
1705 that a bright comet was periodic and would make another appearance in
1758. The comet appeared as predicted and is now known as
Comet Halley.
Unfortunately, Halley died in 1742 and never saw his prediction come true.
In 1716
Halley proposed two types of diving bells that would enable people
to explore the deep sea.
Halley pioneered our understanding of trade winds,
tides, cartography, naval navigation, mortality tables, and stellar proper
motions.
Halley (incorrectly)
proposed that the Earth was made of
concentric spheres the size of the inner planets each of which might
contain life. Perhaps Halley's greatest discovery, however, was that his
contemporary
Isaac Newton
had discovered a powerful mathematical formulation of gravity.
1999 2000 2001 2002 2003 2004 2005 2006 2007 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
комета Галлея - Собственное движение - Приливные явления - строение Земли
Публикации со словами: комета Галлея - Собственное движение - Приливные явления - строение Земли | |
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