Help me understand this effect

184

Help me understand this effect

@Wogi to

Ask ScienceEnglish • 7 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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@thantik
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3•7 months ago
Works fine for me on a different instance. Maybe other instances should get their shit together instead?

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