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Light source for testing the flatness of polished optical surfaces. Very effective for viewing Brewster’s Fringes and Newton’s Rings. Each lamp contains two fluorescent bulbs without coating, except the smallest, which has one U-shaped bulb. Each window is composed of two plastic sheets, one diffusing white and one transparent green to pass only the green line, 5461Å, of the mercury spectrum present. Green filter displays sharply-defined interference rings. Visibility is several times greater than helium-type lights and the green light helps eliminate eye fatigue. The unit is tilted forward at 120° angle of diffusion, allowing uniform illumination over the surface. Lamps are provided with a grounded 3-prong cord (110V) and tilting base (approximately 30° tilt forward) which may be suspended with a chain.
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6W Green Monochromatic Lamp (3.5" x 5" Window)
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NT58-172 | $295.00 |
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12W Green Monochromatic Lamp (7" x 7" Window)
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NT38-033 | $325.00 |
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16W Green Monochromatic Lamp(10.25"x11.75" Window)
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NT38-037 | $395.00 |
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Showing 1-3 of 3 Items
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1 Green Bulb for 6W Monochromatic Lamp
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NT58-173 | $60.00 |
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2 Green Bulbs for 12W Monochromatic Lamp
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NT37-380 | $65.00 |
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2 Green Bulbs for 16W Monochromatic Lamp
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NT37-381 | $95.00 |
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