Recent results of new theoretical analyses and optical experiments have given rise to a more complete knowledge of the quantum properties of light. This book gives the first detailed description ...

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 ...

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 ...

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 ...

Light provides the energy needed for photosynthesis. Increasing the light intensity increases the rate of photosynthesis, provided plenty of carbon dioxide and water are available. The maximum ...

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 ...