PARABOLIC MIRROR NEODYMIUM MOUNT

[MrLynchl]

Melting is the way to go I used a small starter hole then used the tappered drill bit from harborfreight going backwards to go to 1/2 inch then found a tappered brass hose nozzle that took it to 3/4 then tapped it with the 3/4 pipe on the theads $12.00

[vgamail2000]

Dan. Really I enjoy and learn with your videos. Please, continue sharing this knowledge with us.

Greetings from Spain.

[dc2dad85]

What can you use that for ? I think it is cool but,I would I have to look for a real big ants or somthing ?

[squeege421]

I want one of those mirrors so bad.

[Mza1942]

1:47

sweating from heat

[luc59457]

Wow you discovered something scientific I would have never noticed =)

[pvampire]

Dan, where can I get a paraboic mirror like the one in this video? I wanna experiment with these but have no clue where to find them...thanks

[cdltpx]

I saw a tripod just like that at a yard sale this weekend for $3. Didn't get it bc it was too heavy but for this application you would welcome additional weight. You get a large enough mirror and you can fry with it.

[ricedrocket]

Don't drill plastic. melt through it with a soldering iron. The extruded plastic become a reinforcing ring around the hole. Also, it has basic shock absorbton properties becasue usually the melted platic ring will have air bubbles in it.

Never drill plastic unless you have no other choice.

Ever using a steel cooking skewer heat with a lighter is better that a drill bit which can grab the plastic and tear the hole instead of cutting.

[sc0rpi0n0]

Pretty neat!

[GreasedMunky]

so, focus a bunch of mirrors to the same point, and achieve a greater heating effect. This is really very interesting, I really like all the vids.

[anfonyl]

What about suction cups. If they can hold a Tomtom steady they may work for these.

[RCvolunteer1978]

Dan, where to get the 17 inch and can they boil water and cook a meal alone just by just aiming it at a pot of water to cook anything or purifty water by boiling it

[timg455]

You know how long it would take for that little mirror to boil water. A lighter would be hotter than that and burn the wood faster. Try boiling a pot of water with a lighter.

[lodevijk]

This 17" mirror concentrated about half a square metre. That would potentially give us 500 watts of peak power.

Not bad for an almost free source of heat.

[Davetech23]

"Try boiling a pot of water with a lighter. "

I have the feeling the mirror would win, but assuming you are right, how much of the butane of that lighter would it consume? Probably all. And how much did you pay for that little bundle of energy? $1 ? Want to pay $1 to heat a pot of water or do it for free?

"Just build it"

[GREENPOWERSCIENCE]

Hi,

I have some on our website. They can cook on a 6" skillet and can boil 12 oz in 5-7 minutes. 8 oz is faster, about 3 minutes in a dark glass container. In a cat iron skillet small one about 20% faster.

Dan

[brukins]

pretty cool nice idea to solve some other mounting problems!

[greg357159]

Dan, where do you purchase the mirror ?

[aerobique]

good man, good videos

[djancak]

1:52 you can see the focal point as the smoke from the wood goes through it

[GREENPOWERSCIENCE]

You will like this older video:-)

watch?v=TYoc_V4_6iE

[solorstars]

or you could use double sided adhesive tape

[ozarksharvest]

Ok - dumb question time. When you pull the stick back there is something showing in the smoke that looks like a (sorry not a scientist) prism? Wrong word I am sure but it appears you can see the focal point - and then the light triangulates out from the focal point? Am I close? Or do I need glasses?

[junkman6261]

I am with you on the "dumb question!" I too see the prism and I also think it's the focal point. Excelent Idea Dan!

[GREENPOWERSCIENCE]

Hi,

That is the focal point and you are correct:-) The center or axis is where they cross. The other half is the image flipped upside down. The distance from the mirror to the focal point is the Focal Length of the mirror.

[GREENPOWERSCIENCE]

watch?v=TYoc_V4_6iE

This is a good video about focal point.

[notz72]

Great work Dan! Are you going to show sun tracking systems that are cost effective with your parabolic mirrors?

[Davetech23]

watch?v=B6EtY5ei4nU

[GREENPOWERSCIENCE]

Good video:-)

[luc59457]

Please show more tec experiments though, I think you have some unfinished business with them =)

[luc59457]

You know, I was thinking, retractable computer chairs, what do ya think?

[luc59457]

You could partially sit on it also... I was thinking the mirror could be mounted on the back rest piece... Many people throw these things away

[ZED74]

I worked out the a good way of making holes in acrylic and thats just to heat up a piece of thinish metal and just pop it through ,, then use emery cloth glued around a thin stick and just keep twisting it to file the hole to the right size. Later use a bigger stick rolled up in emery cloth if you need to make the hole bigger . its a sure fire way to not crack the plastic ;) good luck !!

[kryptiea]

problem i see with mirrors is limited uses VS solar and wind

[luc59457]

The solar frequency spectrum approximates a black body spectrum at ~6000 K, and as such, much of the solar radiation reaching the Earth is composed of photons with energies greater than the band gap of silicon. These higher energy photons will be absorbed by the solar cell, but the difference in energy between these photons and the silicon band gap is converted into heat rather than into usable electrical energy.

[motormaker]

wind is very limited . Solar ,with or without mirrors, is the way to go. At least it is relatively constant. If you have a cloudy day you still produce some power. If the wind stays below the cut in speed for your wind turbine you produce nothing.

[czarwright]

Very nice, that view really show the focus of light well too.

Peace =)

[R8tedE]

genius

[GREENPOWERSCIENCE]

:-) Second.

[andruha11234]

:o first!!!!