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Tech Head - The Technology Section
Einstein's Alcove
Interesting use for an old dish
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<blockquote data-quote="PoloMint" data-source="post: 93696" data-attributes="member: 175235"><p>That's actually very dangerous, coating a dish in silver foil and pointing it at a light source is a good way of finding the focal point (where the bright spot of light is focused sharpest is where the LNB should be) but even doing that by sunlight in the UK can cause permanent eye damage if you shine it into your eye by mistake. As a result people took to doing it at night with a full moon – less light and so less danger of blindness. </p><p></p><p>Even painting a dish with a gloss or reflective paint, to disguise it, can reflect much more light and heat and cause the LNB cover to melt.</p></blockquote><p></p>
[QUOTE="PoloMint, post: 93696, member: 175235"] That's actually very dangerous, coating a dish in silver foil and pointing it at a light source is a good way of finding the focal point (where the bright spot of light is focused sharpest is where the LNB should be) but even doing that by sunlight in the UK can cause permanent eye damage if you shine it into your eye by mistake. As a result people took to doing it at night with a full moon – less light and so less danger of blindness. Even painting a dish with a gloss or reflective paint, to disguise it, can reflect much more light and heat and cause the LNB cover to melt. [/QUOTE]
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Tech Head - The Technology Section
Einstein's Alcove
Interesting use for an old dish
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