For centuries, scientists have tried to measure the speed of light directly and failed every single time. Light moves so fast ...

No matter how fast you move, the light will always catch you. Nowadays we take the speed of light for granted. It's a fundamental constant of the universe: light simply travels at the speed it does ...

I recently ended up using mine to measure light and sound in my room, which also happens to be my home office. I was trying ...

Physicists use a 350-year-old theorem that explains the workings of pendulums and planets to reveal new properties of light waves. Since the 17th century, when Isaac Newton and Christiaan Huygens ...

Integrating spheres are widely used to measure the total light output (radiant or luminous flux) of light sources such as lamps, luminaires and LEDs, but few (if any) come calibrated for measuring the ...

Shopping for lighting used to be all about watts. Today, most fixtures and bulbs are LED, and the more important number on ...

Until now, complex experimental equipment was required to measure the shape of a light pulse. Now, it can be done in a tiny crystal with the size of less than a milimeter. This can be used to study ...

In science, there are thousands of ways to measure the world around us that the average person may never encounter. For example: Pascals to measure pressure, Candles to measure light intensity, and ...

A phone with a stargazing app, but only if you get stuck LIGHT pollution makes stargazing in towns and cities more difficult, but that doesn’t mean you can’t see anything. By measuring the light, you ...

Today, modern lasers can generate extremely short light pulses, which can be used for a wide range of applications from investigating materials to medical diagnostics. For this purpose, it is ...