Is it true that the rotation of the earth is slowing
down ever so slightly? If so do you know the rate at which it is
The tides are causing the earth's rotation to slow due to friction.
The rate of rotational slowdown has been determined by astronomers to
be 0.002 seconds per century. This rate has been determined by
studying growth rings in the shells of certain invertebrates, such as
clams and corals, and comparing them with growth rings in the shells
of fossil specimens.
Revolution rate (Earth's trip around the sun) does not change.
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Update: June 2012