Red Beam
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Posted by admin | Posted in Pet Supplies | Posted on 18-08-2010
Tags: beam, blue, green, laser, netherspite red beam, pointer, power, red beam, red beam cord, red beam entertainment, red beam flashlight, red beams and rice, red beams and rice lyrics
Red Beam
When a beam of light shines through a green filter then a red filter. What will happen?
When a beam of light shines through a green filter. A red filter is then placed in front of the green filter. What will happen?
No light will pass through both filters if they are narrow band filters. The green filter lets only green light through (wavelength about 500-550 nm) and the red filter lets only red light through (about 620-670 nm). After passing through the green filter, only 500-550 nm light is left, and the red filter blocks everything but 620-670 nm, but there isn’t any of that.
Triangle UFO England – Red Beam UFO Video
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