This is a thick Mylar based parabolic mirror with a 40 inch effective area. The focal length is adjustable with vacuum power. It produces amazing optics and may be an option for a Dobsonian Telescope. The part C material is a first surface mirror on one side and second surface on the other. We coat the first surface with an enamel spray as water can remove the mirror. Once coated it is weather proof. We also use the second surface for solar. FOCAL LENGTH 5000 MM TO 8000 MM. I left this a bit baggy but with a good stretch, you can make a 15M FL.
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mjcriner2 says:
January 27, 2012 at 8:28 am (UTC 0)
Love it.
speaking of drum- maybe find an old frame drum or large tambourine.
That way it will be circular, portable, and still? be able to fit in a neat little case
sidha333 says:
January 27, 2012 at 8:31 am (UTC 0)
@GREENPOWERSCIENCE Hello, how? can you “darken” the steel wool? (and what kind of wool the best for this purpose)? Thanks for the video, its great as always!
narcovice says:
January 27, 2012 at 9:01 am (UTC 0)
haahaa use wd40? next time it’ll take the pain away instantly it works
canamm says:
January 27, 2012 at 9:58 am (UTC 0)
Super glue works well on cuts like that but you have to get it to stop bleeding and make sure it’s dry.
P.S. Yes, it stings a little at? first but it beats stitches and leaves far less scarring.
Balphagore13 says:
January 27, 2012 at 10:47 am (UTC 0)
@GREENPOWERSCIENCE U BOIL IT!? SO HE DIED!!!! >.< By the way Condolence RIP Max
Nikjooo says:
January 27, 2012 at 11:11 am (UTC 0)
@supersnigeln007
You are wrong. All motion? is relative.
jamiecole12 says:
January 27, 2012 at 11:44 am (UTC 0)
cut looks like a sad? face
abobjenkins says:
January 27, 2012 at 12:24 pm (UTC 0)
yeah, stan? must be…GAY
soulioman says:
January 27, 2012 at 12:46 pm (UTC 0)
how is? this king of mirror is called??i want to make one !
eloid777 says:
January 27, 2012 at 1:12 pm (UTC 0)
dan i would do a quick search on youtube a bout vaccum forming use this idea
i would get an nice dish, sand prep the surface smooth, cut out the mylar sheet
over sized, drill a hole in the middle of dish say 1/4 inch
attach a vaccum hose there ie silicon it on back to port the vacumm, then spary 707 3m glue on dish and vaccum the mryal to it not heet. then hold the vaccum for on? hour you now have mirroed dished
fukyuz101 says:
January 27, 2012 at 1:36 pm (UTC 0)
Dan & Denise I’m really sorry to hear about Max : ( I’m sure he appreciated you two as much as all of us do : ) I’ve been greatly inspired? by your work and experiments especially the experiment with The vacuum bottle and stainless insert heating element. I was wondering if you’ve ever used or built a solar tracking system ? or thoughts on that ? Love the paabolic and fresnel cooking as well. Thanks again for all your inspirations. GREENPOWERSCIENCE ROCKS !!!
GREENPOWERSCIENCE says:
January 27, 2012 at 1:54 pm (UTC 0)
@91grecsi Thank you:-) He was? a good friend.
khalidbaacha says:
January 27, 2012 at 2:22 pm (UTC 0)
Good Job…………………..!?
supersnigeln007 says:
January 27, 2012 at 2:52 pm (UTC 0)
The sun don’t move, the earth move
?
craftmatic2 says:
January 27, 2012 at 3:40 pm (UTC 0)
You should have been on the Mythbusters for the Archimedes’ death ray episode.
Those guys from MIT suck compared to your setups. Your one mirror was more powerful than their entire array…?
TheBrownbirds says:
January 27, 2012 at 3:55 pm (UTC 0)
Cool idea, but can you use this? construction to heat up a room?
3xTube says:
January 27, 2012 at 4:32 pm (UTC 0)
@rancidscooter There is a patent for that already. Half mirror half transparent and? with solar chips to generate electricity. I plan to build one too, just need to find proper (resistant) materials.
3xTube says:
January 27, 2012 at 4:55 pm (UTC 0)
Where do you get mylar? I have? got the emergency blanket, but it is very thin, and I keep scavenging my chips packages (mylar too according to someone). But a piece of this size??? Tell me.
pickrrya says:
January 27, 2012 at 5:49 pm (UTC 0)
if you look into? the mirror, can you see the jar magnified?
Ulterior1980 says:
January 27, 2012 at 6:23 pm (UTC 0)
dont try using this parabolic mirror from your yard on? a landing planes LOL
rawfflecakes says:
January 27, 2012 at 7:21 pm (UTC 0)
STARGAATTTTE?
robertorml says:
January 27, 2012 at 7:48 pm (UTC 0)
hahaha… you are funny!
in one minute talking about sun power and all them out of no where show the dog… really rtandon and funny
good work with the mirror!! put it to produce eletric power, i mean, if you are interested.
ahhh, sorry for the dog, he looks happy at the video that? is thanks toyour !
Charrasca says:
January 27, 2012 at 8:39 pm (UTC 0)
Not very polite to show me your hurt and the lumb in? the dog.
Charrasca says:
January 27, 2012 at 9:07 pm (UTC 0)
Not very polite? to show me your hurt.
josephdupont says:
January 27, 2012 at 10:03 pm (UTC 0)
Well dan, it would seem that you might want to make an octagon out of
some 2? x 10′s or so..
how wide does the reflective material get.
you can flex a 4 or 5 foot long mirror and get a fp of about 15 -20 feet.
these are the long narrow ones.
I imagine that you could get several bowed.
yes concentrating the sun has some neat potential. What about a solar powered
jet turbine???