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- Math
Whips and Dinosaur Tails
The loud crack of a deftly flicked bullwhip can certainly command attention. That distinctive noise is a small sonic boom, generated when the whip’s thin, highly flexible tip exceeds the speed of sound. Swinging a leather bullwhip’s thick, rigid handle in an arc gives the whip angular momentum. Sharply reversing the motion’s direction sends a […]
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19117
This article fails to make the distinction between the synthetic hormone progestin and the naturally occurring hormone progesterone. Progestin is medroxyprogesterone acetate (MPA), which is manufactured from the urine of pregnant mares. MPA is 10 to 100 times more potent in its effects on women than natural progesterone and does not produce the same reactions […]
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19121
As many wives of depressed men will tell you, depressed husbands don’t just mope around.
