- Thread Author
- #1
Einstein's claim that the speed of light is constant- has survived more than a century of scrutiny. But scientists are still daring to test it.
Some theories of quantum gravity suggest light might behave slightly differently at extreme energies, by tracking ultra-powerful gamma rays from distant cosmic sources. Researchers searched for tiny timing differences that could reveal new physics. They found none, but the results tightened limits by a huge margin.
Researchers have now discovered a quantum system where energy and mass move with perfect efficiency. An ultra-cold gas of atoms confined to a single line, countless collisions occur, but nothing slows down. Instead of diffusing like heat and metal, motion travels cleanly and undiminished.
The finding reveals a striking form of transport that breaks the usual rules of resistance.
Can you dispute these researchers?
Some theories of quantum gravity suggest light might behave slightly differently at extreme energies, by tracking ultra-powerful gamma rays from distant cosmic sources. Researchers searched for tiny timing differences that could reveal new physics. They found none, but the results tightened limits by a huge margin.
Researchers have now discovered a quantum system where energy and mass move with perfect efficiency. An ultra-cold gas of atoms confined to a single line, countless collisions occur, but nothing slows down. Instead of diffusing like heat and metal, motion travels cleanly and undiminished.
The finding reveals a striking form of transport that breaks the usual rules of resistance.
Can you dispute these researchers?