Uncategorized
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19148
Newton derived theories about gravity by studying stationary or very slowly moving objects. Laboratory measures of G performed since share this fundamental approach. While this may accurately measure G, any possible relative velocity dependence to this constant or to the force of gravity goes undetected. Determining that force involves only the masses, the separation, and […]
- Humans
From the October 29, 1932, issue
THE OWL AND THE PUSSYCAT RIVALS AT MOUSE-CATCHING One of the favorite riddles of childhood was, “Spell ‘mousetrap’ in three letters”; and the answer was “C-A-T.” With even more appropriateness, the answer might have been “O-W-L,” for the Owl is an even better mousetrap than the Pussycat, besides being somewhat more restrained in the matter […]
- Earth
Timely Climate
Science educators at the University of Colorado and the National Geophysical Data Center in Boulder have designed an online tool that lets users study climate change and variability on different time scales–from daily fluctuations to cyclic changes with periods that span 100,000 years.
