KE4JOY
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« on: February 02, 2011, 08:13:19 AM » |
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Enterprising young man construscts a parabolic mirror which appears to work. Fake or not?? Woops forgot the link http://www.youtube.com/watch?v=TtzRAjW6KO0 |
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« Last Edit: February 02, 2011, 08:15:10 AM by KE4JOY »
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KA5N
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« Reply #1 on: February 02, 2011, 08:18:34 AM » |
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Other than the word "construscts" I didn't understand this at all.
Maybe you are thinking about an "interocter"?
You can order these directly from the mother ship.
Allen
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G3RZP
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« Reply #2 on: February 02, 2011, 08:38:39 AM » |
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Didn't the ancient Greeks do something like that to defeat an attacking naval force?
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N0SYA
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« Reply #3 on: February 02, 2011, 08:47:08 AM » |
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now if they could just create lenses up in the ionosphere
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If you have a clumsy child, you make them wear a helmet. If you have death prone children, you keep a few clones of them in your lab.
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K3GM
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« Reply #4 on: February 02, 2011, 09:37:35 AM » |
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Didn't the ancient Greeks do something like that to defeat an attacking naval force?
Mythbusters recreated this on an episiode last year, and it was a dismal failure. This guy's Death Ray has a pretty short focal length! |
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KE4JOY
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« Reply #5 on: February 02, 2011, 03:50:18 PM » |
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It looked like a sattelite tv dish parabolic with alot of mirrors attached. Those parabolics focus at the rf amp thingy, short indeed.
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N3OX
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« Reply #6 on: February 02, 2011, 04:58:32 PM » |
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I'm sure it's real. A dish that size will collect something like 500W of light. Focused down to a half inch spot, that's plenty to light stuff on fire, burn through aluminum cans, etc.
It'd be even more impressive if he got the focus tighter.
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KC8OYE
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« Reply #7 on: February 02, 2011, 06:16:38 PM » |
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mythbusters tried this TWICE the 2nd time on an absolutely massive scale and it wasn't a failure as such.. but it really didn't live up to expectations.. they said it was 'warm' standing in front of it.. but not enough to make a person want to turn and run.
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KC8IUR
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« Reply #8 on: February 02, 2011, 06:33:25 PM » |
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"I'm standing right in it... and... i'm not dead yet..."
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KC8OYE
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« Reply #9 on: February 02, 2011, 07:08:03 PM » |
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"I'm standing right in it... and... i'm not dead yet..."
hahaha yeah. .that's the one!! it does make you wonder tho.. if you had a way to ACCURATELY focus that many mirrors.. their sight-aiming system was pretty slick.. but how still can a human actually hold a mirror? |
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KC8IUR
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« Reply #10 on: February 02, 2011, 07:42:04 PM » |
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I suppose it could still be possible, but I don't see how.
Look at Mythbuster's burnout-on-fire test. They did burnouts with gasmasks on in pools of gasoline and failed to get ignition, but there are many youtube videos of people exploding their tires into donuts of flame.
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KC8OYE
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« Reply #11 on: February 02, 2011, 07:52:06 PM » |
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yeah some of what mythbuster's do is not accurate.. I've personally seen tired burst into flame doing a burnout. i've also noticed that when it involves things that aren't necessarily legal, they dance around things that could make it confirmed. like the episode on avoiding police radar guns.. It's very easily done. As Hams I'm sure you are familiar with the process of 'stepping' on top of a smaller signal....  |
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« Last Edit: February 02, 2011, 07:56:33 PM by KC8OYE »
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N0SYA
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« Reply #12 on: February 02, 2011, 08:05:52 PM » |
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cough gunnplexer cough
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If you have a clumsy child, you make them wear a helmet. If you have death prone children, you keep a few clones of them in your lab.
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KC8OYE
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« Reply #13 on: February 02, 2011, 08:26:47 PM » |
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cough gunnplexer cough
exactly. |
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KC8IUR
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« Reply #14 on: February 02, 2011, 08:59:17 PM » |
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The worst are gun myths, although they've gotten better.
These tracers are ILLEGAL! This gun is ILLEGAL!
Yeah, in your one state out of 50.
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