| What
is a "Birefringence"? |
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Birefringence, or double refraction, is the division of a
ray of light into two rays (the ordinary ray and the extraordinary ray)
when it passes through certain types of material, such as calcite crystals,
depending on the polarization of the light. |
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| Telescope
Designs |
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 In
general, there are two kinds of telescope systems. One
is the Optical Telescope. This is our main manufacturing
base. The other is the radio telescope, which is used
for National & Scientific research . We manufacture
only a few of these. |
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| Telescope
Reviews |
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| Telescope reviews from our
clients and end users. Please feel free to post your
own comments. |
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