2 ms·
> “Quantum mechanics tells us that position and momentum can’t be known precisely – but it says no such thing about energy,” Safavi-Naeini said. “Energy can be
by petermcneeley 7y ago
> “Quantum mechanics tells us that position and momentum can’t be known precisely – but it says no such thing about energy,” Safavi-Naeini said. “Energy can be known with infinite precision.”
There is actually a time-energy uncertainty relation.
https://en.wikipedia.org/wiki/Uncertainty_principle https://en.wikipedia.org/wiki/Uncertainty_principle
- dangirsh 7y agoThe original quote is too ambiguous for me to parse, but I feel compelled to mention that we should be careful with time-energy uncertainty. Time is usually not considered an observable in quantum theory, so it can be tricky to talk about time uncertainty.