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A source of illumination.
The light source was a halogen lamp used in the dental clinic, emitting mainly in the blue part of the spectrum.
This is possible provided that nearly monochromatic light source is used.
It is surrounded by the penumbra that receives some light from the light source.
The new synchrotron is operated by Diamond Light Source Limited.
The principle is analogous to B scan ultrasonography, using a light source instead of sound.
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