We know that measuring the speed of light with an Arduino is possible. It’s just that the implementation is hard. [Udo] hit upon the idea of pulsing a laser pointer and measuring the time of the ...

The other important measurement is time, as the sloppier the distance and time measurements are, the worse the estimate of the speed of light will be. Michelson used an 8-sided mirror device that ...

Physicists have taken quantum strangeness to an extraordinary new level by measuring light across 37 dimensions. Their groundbreaking experiment pushes quantum mechanics beyond classical ...

Professor Brian Cox explains how light travels so fast that people believed it was instantaneous. A Danish astronomer, Ole Rømer, noticed that Jupiter’s moon, Io sometimes seemed to appear ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen ...

Researchers developed a single photodiode sensor that detects full-color light using perovskite materials, impedance data, ...

It can be used to analyze particles with sizes ranging from a few nanometers to several microns. This image depicts the principle of Dynamic Light Scattering (DLS) for measuring particle sizes. At the ...