The researchers precisely focused femtosecond pulses of laser light very close to the front surface of a block of glass in order to "propagate a hairline laser beam without the need of specially fabricated waveguides," said Stelios Tzortzakis, a research associate at Ecole Polytechnique in France. "The laser beam is self-guided."
Transparency and translucency. Dichroic filters are created using optically transparent materials. In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without appreciable scattering of light. On a macroscopic scale (one in which the dimensions are
As you mention, polycarbonate will almost always be a poor option if UV transmittance is desired as UV absorption is a fundamental property of many plastic materials. Many commercial glass materials will also absorb a significant amount of UV-A wavelengths, but we are aware of some "quartz glass" materials which are commonly known to have a
However, what Plexiglas does regarding ultraviolet light is reduce its intensity. As ultraviolet rays pass through Plexiglas windows, they're refracted and broken up, made less intense so that those on the other side of the window aren't exposed to the full level of the radiation. Bubbling, Peeling and Cracking
Check a fabric’s sun safety by holding it up to the light. If you can see through, UV radiation can easily penetrate the fabric and reach your skin. Tight clothing can stretch and reduce the level of protection offered, as the fibers pull away from each other and allow more UV light to pass through. How does UV light effect microorganisms?
Diffused light scatters light throughout the house and reduces shadows caused by the greenhouse framing materials. All glazing products —polyethylene, polycarbonate, glass and acrylic, can be manufactured or treated to diffuse light. Growers should know the capability of a covering to diffuse light before making a purchase.
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does uv light pass through plexiglass