Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

Photonic crystal surface-emitting lasers or PCSELs are laser diodes that generate laser beams through controlled light wave interaction within a photonic crystal structure. In a recent study, ...

Laser diodes are semiconductors that generate light and amplify it using repeated reflection or 'optical feedback'. Once the light has achieved ...

I was recently invited to try SomaCell, a groundbreaking new FDA-cleared treatment that promises to take years off your face ...

Turbulence is the complex chaotic behavior of fluids, gases or nonlinear waves in various physical systems. For example, turbulence at the ocean surface ... solution to the equation describing ...

Our physics expert picks his top-five equations, plus a scheme to supply US power needs with a bucket of baseballs. Thanks, ...

Changing Cleaner that is getting everyone crazy I’ll never forget the day I spilled red wine on my favorite armchair. The stain seemed impossible to remove, and I thought I’d have to live with it ...

Everyone has seen the iridescent rainbow patterns in an oil sheen on water.  Oil is hydrophobic, which repels water and doesn’t mix.  It spreads out across the surface of the water, and if ...

Great Migrations: A People on The Move is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, ...