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The Water Cooler
General Discussion
Checking and lapping a machine shop granite stone for flatness in millionths of an inch
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<blockquote data-quote="Snattlerake" data-source="post: 3506253" data-attributes="member: 44288"><p>I cannot remember what video it was but there was a man at a grinder shop who was showing the measurement of a vertical cylinder as compared to another vertical measuring device. He showed the light in between the two was turned into blue light because of the very small gap between them. He said the other light frequencies wouldn't pass through that small of a gap.</p><p>He also showed that two gauge blocks that are super clean can be "wrung" together and due to the surface area alone will stick to each other and are very hard to get apart. He said they still don't know why the blocks stick together. They think it's the attraction between electrons or a weak magnetic force.</p><p></p><p>[MEDIA=youtube]2lOOl3VxOtE[/MEDIA]</p></blockquote><p></p>
[QUOTE="Snattlerake, post: 3506253, member: 44288"] I cannot remember what video it was but there was a man at a grinder shop who was showing the measurement of a vertical cylinder as compared to another vertical measuring device. He showed the light in between the two was turned into blue light because of the very small gap between them. He said the other light frequencies wouldn't pass through that small of a gap. He also showed that two gauge blocks that are super clean can be "wrung" together and due to the surface area alone will stick to each other and are very hard to get apart. He said they still don't know why the blocks stick together. They think it's the attraction between electrons or a weak magnetic force. [MEDIA=youtube]2lOOl3VxOtE[/MEDIA] [/QUOTE]
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The Water Cooler
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Checking and lapping a machine shop granite stone for flatness in millionths of an inch
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