क्या है गुरुत्व का विलोम (प्रति -गुरुत्व )?एंटी -ग्रेविटी ?क्या है पदार्थ का विलोम (प्रति -पदार्थ )?एंटी -मैटर ?
CERN scientists to look for antigravity
"We know that it is like the mirror image of matter, with many of its key properties reversed. What we want to find out is whether that includes its gravitational properties.
ALPHA was the first experiment to trap atoms of antihydrogen - neutral antimatter atoms held in place with a strong magnetic field for up to 1000 seconds.
The problem is that this field is so powerful that scientists cannot measure the effect of gravity.
"Our apparatus cannot even show us if antimatter falls up or down, so we are building something much more sensitive," said Hangst.
The CERN team plans to trap up to 100 antihydrogen atoms in a magnetic field - and then gently turn it off.
"In the unlikely event that antimatter falls upwards, we would have to revise our view of the way the universe works," said Joel Fajans, a member ALPHA at the University of California, Berkeley.
The ALPHA Collaboration is a group of physicists from about 11 universities who collaborate to try to trap neutral antimatter.