Ask Science@lemmy.worldEnglish · 10 months ago

Help me understand this effect

lemmy.world

Help me understand this effect

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Wogi@lemmy.world to

Ask Science@lemmy.worldEnglish · 10 months ago

This is an abrasive disk, rotating at 1500 rpm. When I shine my flashlight at it, it carries the glow with it, approximately halfway around the disk. What am I seeing happen here?

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regdog@lemmy.world
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10 months ago
What effect are you talking about? Is there a frog clinging to the underside of that stone, and you try to coax him out with a flash light?

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