|
Home / News / Tags / isotope
|
|
World War II and the Cold War era saw several thousands of nuclear tests being carried out throughout the world, including the atomic bombings of the cities of Hiroshima and Nagasaki which literally put an end to hostilities in World War II. During that time, significant amounts of nuclear fallout have been produced,... |
5 July 2008
05:55 GMT |
 |
|
The heaviest chemical element known to occur naturally in Earth's crust is uranium 92 while the heaviest chemical element known to exist, a synthetic element, bears the atomic number 118. All elements heavier than uranium are highly unstable and quickly disintegrate into other stable chemical elements - this is ... |
5 May 2008
06:14 GMT |
|
|
Isomers are very important to scientists mostly because their ground state atomic nuclei can provide with valuable information regarding interactions between the protons and neutrons present inside the nucleus. Some isomers may only live for a few fractions of a second while others, for millions of years at a time, t... |
25 March 2008
03:27 GMT |
|
|
No alibi for killers, no unknown origins for the victims: a new crime-fighting tool analyze human hair for revealing location, helping police to follow the past movements of criminal suspects or murder victims. "You are what you eat and drink - and that is recorded in your hair," said lead researcher Thure Cerling, a... |
26 February 2008
05:02 GMT |
|
|
Surprisingly enough, nowadays, one kilogram weighs less than it did a century ago…about 50 micrograms less. The 118-year-old international prototype for the metric mass, kept tightly under lock outside Paris, is mysteriously losing weight. "The reference kilo appears to have lost 50 micrograms compared with the avera... |
14 September 2007
06:41 GMT |
|
|
You can no longer lie. Scientists can tell now if your marijuana came from Mexico or grew in your apartment. A team at Alaska Stable Isotope Facility has developed an isotope-based method that can tell which region a marijuana sample comes from and if it grew indoors or out. In a few years, the researchers could make... |
23 June 2007
06:03 GMT |
|
|
A high flux isotope reactor went online after more than a year of repairs, systems checks and improvements that cost more that $70 million. It's a research reactor at the Department of Energy's Oak Ridge National Laboratory internationally recognized as a neutron source for materials studies and isotope pr... |
18 May 2007
15:36 GMT |
|
|
Astronomers have recently measured the age of a star located in our Galaxy and discovered that it's a real fossil in space, being 13.2 billion years old. For comparison, the entire Universe, from the Big Bang, is only 13.7 billion years old, a very small difference in cosmic time.The star's name is HE 1523... |
11 May 2007
08:28 GMT |
|
|
|
|
