There's been talk over the years about whether or not a famous rule, called l'Hopital's Rule, after the French nobleman Guillaume-Francois-Antoine Marquis de l'Hopital, Comte d'Entremont, Seigneur d'Ouques-La-Chaise – which is not even his full name – possibly 'bought' the rule from the famous mathematician Johann Bernoulli, who was born in 1667.
Three young deer, the same three that had touched their noses to my front windows in the snowy months, while I was at the computer barely 8 feet away, and who later ate the emerging hyacinths of March/April, today chewing at low-branched green leaves …
The 500 pp book “50 Shades of Grey”, by E.L.James – a pseudonym for the 50 yr old writer Erika Mitchell[ref.2] (who lives in London with her husband and two sons) -- has been variously slanged by critics. Despite these criticisms the book and its 2 sequels have been selling (last year) like wildfire, with the majority of the readers being women. So somehow, worldwide, there is a deep need.
They've released [ref.1] the final report for the disappearance of Flight 447, a 200 ton Airbus which disappeared in June 2009 on its way from Rio de Janeiro to Paris. About 4 hours into the flight, somewhere over the Atlantic, in night-time stormy weather, contact with the airliner was completely lost.
There've been musicians like astronomer Herschel, and there've been chemists like Borodin – but all my life a favorite mathematician has been Tom Lehrer, whose songs began to come out when he was a graduate student in the '50s.
The asteroid “DA14”, which will hurtle past us sometime after lunch today, was discovered by Spanish observers last year.
Our highest satellites, used for GPS, are just over 22,000 miles up, and DA14 will pass underneath that level – coming about 17,000 miles from us. Fortunately, NASA assures us we are safe.
Now Earth and Moon have been hit many times, over the eons, by asteroids.The explosive 1908 Tunguska asteroid, a similar size to the one passing us on Friday (which for a while many suspected might have been a mini-black hole) damaged 800 square miles of Siberia.
Oliver Heaviside received not much more than a middle school education, leaving school at 16 -- yet became one of the most famous mathematical physicists of his time [ref.1.].
In a short biography by Appleyard [ref.2, p.218-9] there are a few drawings of horses by the 11 yr old Oliver, perhaps because his own father was an artist. as well as a wood engraver. The family lived in an impoverished part of Camden Town, London. Nevertheless, his mother's sister was the wife of Charles Wheatstone, famous for the Wheatstone Bridge circuit used in telegraphy.
Anyone who's jumped off a haystack or played on a trampoline, knows the pleasurable feeling of weightlessness, wherein there are, for a fleeting moment, no more sagging body parts.
Felix Baumgartner, a 43-year old Austrian military parachutist, intentionally jumped from a capsule 24 miles up, on Oct 14, thus certainly knowing weightlessness for a decent amount of time. And what a fascinating lot of physics the man who fell from space experienced!