Forgot your password?
typodupeerror
Science

Nuclear Decay May Vary With Earth-Sun Distance 418

KentuckyFC writes "We've long thought that nuclear decay rates are constant regardless of ambient conditions (except in a few special cases where beta decay can be influenced by powerful electric fields). So that makes it hard to explain two puzzling experiments from the 1980s that found periodic variations over many years in the decay rates of silicon-32 and radium-226. Now a new analysis of the raw data says that changes in the decay rate are synchronized with each other and with Earth's distance from the sun. The physicists behind this work offer two theories to explain why this might be happening (abstract). First, some theorists think the sun produces a field that changes the value of the fine structure constant on Earth as its distance from the sun varies. That would certainly affect the rate of nuclear decay. Another idea is that the effect is caused by some kind of interaction with the neutrino flux from the sun's interior which also varies with distance. Take your pick. What makes the whole story even more intriguing is that for years physicists have disagreed over the decay rates of several isotopes such as titanium-44, silicon-32, and cesium-137. Perhaps they took their data at different times of the year?"
The Almighty Buck

Hit Man Email Scammer Back With a Vengeance 169

coondoggie writes "The online Hitman scammer, who threatens to kill recipients if they do not pay thousands of dollars to the sender, is still sending out thousands of emails and the FBI is again today warning users to ignore the spam and report any incidents to the Internet Crime Complaint Center. Two new versions of the scheme began appearing in July 2008, the FBI said. One instructed the recipient to contact a telephone number contained in the e-mail and the other claimed the recipient or a 'loved one' was going to be kidnapped unless a ransom was paid."

Slashdot Top Deals

The reward for working hard is more hard work.

Working...