That is, the motion of the earth is now mixed in a complicated way with the motion of the pendulum. As you can prove if you watch the pendulum for a while, the effect of this is to slow down the ...

A partial solar eclipse will be visible from the U.S. this weekend, but only a select few of the northernmost states are ...

This apparent displacement of starlight because of the velocity given an observer by the earth's orbital motion was explained in the 18th century by the English astronomer James Bradley ...