We don't usually think in terms of a "volume of light." We tend to speak of brightness. But the amount of anything available in a given space is called a volume. "Please pass a quart of light" sounds ...

New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe's infancy—the earliest cosmic time yet accessible to humans. Measuring light ...

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

The University of Granada has developed a new technique to instantly quantify light pollution levels or artificial night sky background brightness. University of Granada researchers have patented a ...

Ophir Optronics Inc. has introduced two new measurement heads. The PD300-BB radiometer head has a spectrally flat response from 400-1,000 nm. and is recommended when the power measurement of broadband ...

Researchers observed exoplanet GJ 1214b's atmosphere by measuring the heat it emits while orbiting its host star. Astronomers directly detected the light emitted by a sub-Neptune exoplanet -- a ...

An international collaboration of researchers developed two new complementary approaches for versatile but precise light intensity measurements in fluorescence imaging systems. Accurate measurements ...

The great Galileo Galilei (1564-1642) tried to measure the velocity of light by means of lantern signals between mountain tops. Naturally he failed. Light travels about 186,270 miles (more than seven ...