Aerospace
ScienceDebate2008 is looking more and more likely as the campaigns of two major candidates (Obama and Clinton) sent surrogates on short notice to a hastily pulled-together preliminary session at the annual meeting of the American Association for the Advancement of Science in Boston. Senator McCain's campaign sent regrets due to the short notice, while the Huckabee and Paul campaigns did not respond at all.
It's official. Hillary Clinton, Mike Huckabee, John McCain, and Barack Obama have been invited to ScienceDebate2008.
The location? Philadelphia's Franklin Institute, named after one of our nation's greatest scientists (and greatest patriots). The date? April 18, just before the Pennsylvania Primary.
Einstein's special relativity is sometimes popularized with statements like: "moving clocks run slower than stationary clocks and moving rods are length contracted relative to stationary rods". The problem is: what is "moving" and what is "stationary"?
Natural flyers like birds, bats and insects outperform man-made aircraft in aerobatics and efficiency. University of Michigan engineers are studying these animals as a step toward designing flapping-wing planes with wingspans smaller than a deck of playing cards.
If you thought ScienceDebate2008 was just a scientist's pipe dream, it's time to think again!
Organizations of scientists, industrialists, and business leaders have joined an impressive list of individuals and associations declaring that science and technology are too important not to know where the presidential candidates stand.
Does Michael Crichton wear a tin hat?
Gunter Nimtz and colleagues claimed to have transmitted Mozart's Symphony No.40 at 4.7 times the speed of light through a tunneling barrier. How's that possible?
Will Kaiser/CDC admit we are infected with this? How will they react in the litterbox?
CDC produces Media Alert - Morgellons
I just updated the Science Shelf to include three new book reviews: one on engineering design, another a biography of famous physicist, and the third about the politics of global warming.
GPS clocks are said to all tick at the same rate as the GPS master clock on Earth. To achieve this, the clocks are built with an offset in rate and then synchronized daily with the master clock. Why is this necessary?
The number of airline mishaps attributed to pilot error significantly declined between 1983 and 2002, according to an analysis conducted by researchers at the Johns Hopkins Bloomberg School of Public Health. While the overall rate of airline mishaps remained stable during that time, the proportion of mishaps involving pilot error decreased 40 percent. The rate of mishaps related to a pilot’s poor decision-making declined 71 percent. The researchers attribute the decline to better training and improvements in technology that aid pilot decision-making. The findings are published in the January 2007 edition of Aviation, Space, and Environmental Medicine.
In the aerospace industry we encounter both gravitational 'forces' and acceleration forces continuously. This entry questions possible differences between the two.
There is no solid evidence that the huge amounts of money spent on airport security screening measures since September 11th are effective, argue researchers in this week’s Christmas issue of the BMJ. Most screening programmes around the world are closely evaluated and heavily regulated before implementation. They rely on sound scientific and cost-benefit evidence before they are put into practice. Is airport security screening an exception, ask Eleni Linos and colleagues?
