Today In Science

Today In Science
  Pulsar discovery

  In 1967, the first pulsating radio source (pulsar) was detected by an alert graduate student, Jocelyn Bell, then working under the direction of Prof. Anthony Hewish at the Mullard Radio Astronomy Observatory, Cambridge, England. A special radio telescope was used, with 2,048 antennae arrayed across 4.4 acres. By 13 Nov 1998, one thousand had been found. The pulsing of the radiation has clock-like precision , up to 1,000 times per second. A pulsar is believed to be a neutron star with exceedingly rapid spin. Rotational periods range from 1.57 milliseconds to 5.1 sec. Pulsars prompted studies of quantum-degenerate fluids, relativistic gravity and interstellar magnetic fields. Similar behaviour of a star flashing in the optical spectrum was detected on 18 Jan 1968.Optical pulsars remain very rare.«

Booklist for Pulsars.

 

 First U.S. auto race

Thumbnail - First U.S. auto race

1893 Duryea

  In 1895, Frank Duryea won the first American Automobile Race in Chicago, sponsored by the Chicago Times-Herald. With his brother Charles, Duryea invented the first automobile that was actually built and operated in the United States. On the day of the race, at 8:55 a.m., six “motocycles” left Chicago’s Jackson Park for a 54 mile race to Evanston, Illinois and back through the snow. Duryea’s Number 5 won the race in just over 10 hours averaging about 7.3 mph and was awarded a prize of $2,000. Following their victory in the race, the Duryeas manufactured thirteen copies of the Chicago car, and J. Frank Duryea developed the “Stevens-Duryea,” an expensive limousine, which remained in production into the 1920s.   more

Carriages Without Horses: J. Frank Duryea and the Birth of the American Automobile Industry, by Richard P. Scharchburg. – book suggestion.
Booklist for Duryea Automobiles.
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