Learn how to determine the observed intensity of a supernova using core physics ideas like luminosity, distance, and the inverse-square law. This video walks through the reasoning and calculations ...

Anyone who’s delved into lighting knows that it’s a complex blend of art, craft and science. Within that pillar of science is the formula, which helps us predict how lights spread over distance—The ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is ...