Help me understand this effect

184

Help me understand this effect

@Wogi to

Ask ScienceEnglish • 9 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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@Mango
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6•9 months ago
Yo this is fascinating!

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