Measuring quantum properties like the wave function of photons of light has allowed researchers to test the principle of least action at a quantum level Hui Yan
A centuries-old fundamental law of physics called the principle of least action has been demonstrated using quantum objects for the first time.
“A physicist’s ultimate dream is to write the secrets of the entire universe on a small piece of paper and the principle of least action must be on the list,” says Shi-Liang Zhu at the South China Normal University. “Our ambition was …
