Physicists use gravity to bend light to create new mobile sensing device

Optical fiber sensor Li

Astrophysicists often talk about gravitational lensing, one of the most interesting aspects of light’s infamous particle-wave duality. This phenomenon shows in a predictable and measurable way how the small mass within each photon of light shooting out from a distant star actually bends the light in the gravitational pull of dense objects along its path. … Read more

For the first time in history, scientists create particles from empty space

Brighter Side of News

The universe appears to be mostly empty space. Once you remove the stars, planets, dust, and gas, there is nothing left. Physics tells a strange story. A vacuum isn’t really empty. It is full of restless energy and momentary quantum fluctuations. These are short disturbances that can generate pairs of virtual particles before disappearing again. … Read more