Quick question need to buy a present

[Jayse_83]

Hi all,

I need to get a friend a present and as a physicist I really wana get them the 'science toy' kinda thing ... does anybody know the name for the encased photonic pressure experiment in which a fan shape has one black surface and a mirrored surface. When it placed in the sunlight the fan spins due to the photon pressure.


Thanks !

 

[GOD__AM]

I think its a radiometer.

more info: http://science.howstuffworks.com/fr...seum.org.uk/collections/treasures/crooke3.asp

Seems Crookes radiometer is the name you are looking for.

 

[Danger]

Seems Crookes radiometer is the name you are looking for.

Try snooping around here . I don't have time to look through the catalogue now, but they used to sell them. I also don't know where you are, so can't help if you're not in North America.