KEPLER'S LAWS
\kˈɛpləz lˈɔːz], \kˈɛpləz lˈɔːz], \k_ˈɛ_p_l_ə_z l_ˈɔː_z]\
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(Johann K. , born near Stuttgart, 1591, died 1630.) Certain laws relating to the motion of the planets, viz: They describe ellipses round the sun, which is in one of their foci.
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The line joining a planet and the sun traces out equal areas in equal times.
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The squares of their periodic times are as the cubes of their major axes.
By Henry Percy Smith
Word of the day
dust storm
- a windstorm that lifts up clouds of dust or sand a windstorm that lifts up clouds dust or sand; "it was the kind of duster not experienced in years"