Monochromatic Light

MONOCHROMATIC LIGHT M027

A single (mono) color (chromatic) light is used with an optical flat to read seal face flatness.

We use a helium light source that emits a pink light with a wavelength of 0.000023 inches (0.6 microns). This light is used with an optical flat to read the light bands of flatness.

After the readings are taken they are compared to a chart that illustrates various flatness patterns.

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  • On February 16, 2018