Daily Star: Simply The Best 7 Days A Week :: News :: Winter may be coldest in 1000 years
Global warming ... ?
Thursday, December 30, 2010
Tuesday, December 28, 2010
Monday, December 27, 2010
Researchers: Ancient human remains found in Israel
Researchers: Ancient human remains found in Israel
400,000 years old--in the Middle East. Time to rewrite evolutionary history?
400,000 years old--in the Middle East. Time to rewrite evolutionary history?
Wednesday, December 22, 2010
Sunday, December 19, 2010
Friday, December 17, 2010
Friday, November 26, 2010
Wednesday, November 24, 2010
Thursday, October 21, 2010
Monday, October 18, 2010
Thursday, October 14, 2010
Wednesday, October 13, 2010
Monday, October 11, 2010
Sunday, October 10, 2010
Saturday, October 2, 2010
Friday, October 1, 2010
Thursday, September 30, 2010
Friday, September 24, 2010
Tuesday, September 21, 2010
Monday, September 20, 2010
Experiments
"The sole test of the validity of any idea is experiment" (Richard Feynman, Lectures on Physics, Vol. 1, 2-3).
Saturday, September 18, 2010
Feynman, Science and Reason
"Observation, reason, and experiment make up what we call the scientific method" (Richard Feynman, Lectures on Physics, Vol. 1, 2-1).
Saturday, September 11, 2010
Friday, September 10, 2010
Wednesday, September 8, 2010
Saturday, August 28, 2010
Saturday, August 21, 2010
Monday, August 9, 2010
The Scientist Who Cried "Confirmed"
From Martin Gardner's The Relativity Explosion (1976):
"Has the general thoery of relativity been supported by experimental evidence? When the first edition of this book was published [1962], physicists were complaining about the weakness of such evidence in contrast to the strong, abundant evidence for the special theory. As Misner, Thorne, and Wheeler put it in their big book Gravitation: "For the first half-century of its life, general relativity was a theorist's paradise, but an experimentalist's hell. No theory was more beautiful, and none was more difficult to test."
"This is no longer true ...."
"Einstein's theory predicts an average deflection of 1.75 seconds of arc for each star. Two measurements in 1919 showed deflections of 1.98 and 1.61, both fairly close. But the deflection dropped to 1.18 in a 1922 test and rose to 2.24 in a 1929 test. At a 1962 meeting of the Royal Society of London, a group of scientists concluded that the difficulties are so great that eclipse observers should no longer attempt such measurements."
"Dozens of sophisticated tests of general relativity in the 1970's have supported Einstein's theory and tended to discredit all its rivals...."
"Has the general thoery of relativity been supported by experimental evidence? When the first edition of this book was published [1962], physicists were complaining about the weakness of such evidence in contrast to the strong, abundant evidence for the special theory. As Misner, Thorne, and Wheeler put it in their big book Gravitation: "For the first half-century of its life, general relativity was a theorist's paradise, but an experimentalist's hell. No theory was more beautiful, and none was more difficult to test."
"This is no longer true ...."
"Einstein's theory predicts an average deflection of 1.75 seconds of arc for each star. Two measurements in 1919 showed deflections of 1.98 and 1.61, both fairly close. But the deflection dropped to 1.18 in a 1922 test and rose to 2.24 in a 1929 test. At a 1962 meeting of the Royal Society of London, a group of scientists concluded that the difficulties are so great that eclipse observers should no longer attempt such measurements."
"Dozens of sophisticated tests of general relativity in the 1970's have supported Einstein's theory and tended to discredit all its rivals...."
Tuesday, August 3, 2010
Monday, August 2, 2010
Friday, July 30, 2010
Thursday, July 29, 2010
Wednesday, July 28, 2010
Tuesday, July 27, 2010
Monday, July 26, 2010
Subscribe to:
Posts (Atom)