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Determining TEC Flatness with Newton’s Rings – part 1
With a 340W, 50x50mm TEC (thermoelectric cooler) arriving at work this week for a project we’re working on, Steve asked me to look at using Newton’s Rings to determine if this new TEC was flat enough...
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Monochromatic Light Box for determining flatness optically
This article discusses how to build a monochromatic light source to determine the flatness of a surface optically. It uses a high pressure sodium lamp housed within a box to shroud the light source,...
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