The speed of light in a vacuum is the absolute speed limit of the universe. Nothing will go faster than 299,792 kilometers ...

A team of researchers has proposed an experiment to finally catch a glimpse of the elusive "graviton", if it does actually ...

In fact, as far as we know, nothing can exceed the speed of light. There are other ways, however, to put his ideas to the test. How do we know Einstein had it right? One experiment in the 1970s ...

Einstein did "thought experiments," and in one he asked what ... Einstein's answer—that light's speed is constant for all observers regardless of their own velocity—obliterated the classical ...

A ripple tank can be used to measure and calculate frequency, wavelength and the speed of waves on the water's surface. A ripple tank is a transparent shallow tray of water with a light shining ...

Scientists doing SETI experiments are looking for proof – not merely of ... it easily passes through the dust and gas that suffuse space, and it does so at the speed of light (about 20,000 times ...

Astronauts on the International Space Station age slightly slower than the rest of us on Earth due to time-dilation effects.

Scientists have measured the magnetic moment of the muon to unprecedented precision, more than doubling the previous record.

The main trick is to use a slow shutter speed. Any light, whether it’s a source ... it will be in the dark. So experiment a lot, figure out what works in different situations, and fire away!

Physicists from Würzburg present a nanometre-sized light antenna with electrically modulated surface properties – a ...