Quick question need to buy a present

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The discussion centers around finding a suitable science-themed gift for a physicist friend, specifically a device that demonstrates photon pressure. Participants identify the item as a Crookes radiometer, which features a fan with one black surface and one mirrored surface that spins in sunlight due to photon pressure. A link to additional information about the radiometer is provided for further reference. Suggestions for purchasing the item are limited, particularly for locations outside North America. The conversation highlights the interest in educational science toys as gifts.
Jayse_83
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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 !
 
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GOD__AM said:
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.
 

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