Solar Furnace Melts Rock

[RickS (Rick)]

A graphic example of why you shouldn't point an unfiltered scope at the sun...

http://articles.mercola.com/sites/ar...elts-rock.aspx

[mswhin63 (Malcolm)]

That totally ROCKS

[jjjnettie (Jeanette)]

omg, look at the way he kept waving his hands around it.
Keep yer hands in your pockets matey.

Thanks for posting the link, that was amazing.

[h0ughy (David)]

good reminder for golden rule number 1 - never ever look at the sun without proper protection (solar filter)

[OzRob (Rob)]

That's cool!! Just lucky I didn't have a magnifying glass that big when I was a boy. I would have vapourised those ants...

[multiweb (Marc)]

Originally Posted by OzRob

That's cool!! Just lucky I didn't have a magnifying glass that big when I was a boy. I would have vapourised those ants...

hehe...I was thinking the same thing. I was a real bada$$ with a magnifying glass too

[RobF (Rob)]

Originally Posted by multiweb

hehe...I was thinking the same thing. I was a real bada$$ with a magnifying glass too

Me too, until the day I was messing about burning holes in paper in dad's new car. Leaving the paper on the seat wasn't a good idea I discovered.

Never saw that magnifying glass again.......
(I'm probably lucky to still be alive)

[Waxing_Gibbous (Peter)]

This thing was on telly a few weeks back. I SO want one (recent 'landscaping has unearthed many, many rocks). I couldn't believe the bloke was waving his hands around like that either. Frenchmen....tch!

[MrB (Simon)]

All I got at that link was an advert asking me to subscribe before going any further. Couldn't see any way around it, other than subscribing.

[mswhin63 (Malcolm)]

Originally Posted by MrB

All I got at that link was an advert asking me to subscribe before going any further. Couldn't see any way around it, other than subscribing.

Got the same too, only recent into maybe wont appear in the near future. very annoying.

[CraigS]

Originally Posted by Albert Viar

Hello Iceinspace enthusiasts,
During a showing of the building of an infrared space telescope, I observed the announcer to say, "Gold reflects infrared". There are tiny bits of gold in many things electronic. Perhaps coating a satellite dish with a conductive coat and doing a bit of gold plating using the electronic fittings and computer card conductors as the gold source. I'll bet there would be no hand waving in front of such a dish.
Albert Viar

Hi Albert;

This is do-able .. gold reflects infrared radiation strongly.
According to Wiki, a single gram can be beaten into a sheet of about 1 square meter.
Handling it might be a problem though, and you still need to glue it onto something parabolic, (or similar), in shape.

Cheers

Cheers

[mswhin63 (Malcolm)]

wonder if gold leaf is workable for this application. Plenty in the art industry

[DJDD]

was this it?
http://www.youtube.com/watch?v=z0_nuvPKIi8

love the use of water to show the focus

and the cool safety specs...

[OzRob (Rob)]

Originally Posted by DJDD

was this it?
http://www.youtube.com/watch?v=z0_nuvPKIi8

love the use of water to show the focus

and the cool safety specs...

Yeap that's the one!!