[Ben Krasnow] is tackling the curious Crookes Radiometer on his Applied Science YouTube channel. The Crookes Radiometer, a staple of museum gift shops everywhere, is a rather simple device. A rotor ...

The radiometer consists of four vanes are black on one side and white on the other, able to freely rotate about a pivot in a partial vacuum. When light shines on the vanes broadly, the vanes rotate ...

It’s a simple device – a set of vanes mounted on a spindle, enclosed in a partially evacuated glass bulb. Each vane is silvered on one side and blackened on the other. When the Crookes radiometer is ...

Most people would recognize the device in the image above, although they probably wouldn’t know it by its formal name: the Crookes radiometer. As its name implies, placing the radiometer in light ...

It might be too soon to consider the innards of the old CRT monitor at the back of your closet to be something worth putting on display in your home or workshop. For that curio cabinet-worthy appeal, ...

SIR WILLIAM GROVE described some experiments he had recently made with a modificition of Crookes's radiometer. After a few prefatory trials, such as coiling one-half of the bulb with tinfoil and ...

In this video I see how fast we can get a radiometer to spin by shining the world's brightest flashlight on it. Then I talk about the real reason the Crookes radiometer spins when you shine light on ...