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Melting stuff with Sunshine

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Sleepalot

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May 22, 2013, 2:45:21 PM5/22/13
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Sleepalot

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May 23, 2013, 5:28:52 AM5/23/13
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emoneyjoe

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May 23, 2013, 6:33:14 AM5/23/13
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On Thu, 23 May 2013 10:28:52 +0100, Sleepalot <sleep...@yahoo.co.uk>
wrote:
That technology should not be advertised
to the general public as a hobby or home
science item, the danger to eyes and skin
is too great.

Any hardware offered for sale should
be made so the danger is reduced.

When I was testing a 4 foot paraboloid
dish I made in 1973, I didn't use good
judgement to protect my skin.

I don't know if it was just a co-incidence,
but afterward I started getting sores on
my face, at least I was careful not to get
concentrated rays in my eyes.

I watched a follow-on movie about
Frankenstein where solar energy was
used and one of the characters had
his face disintegrate from it, that
was spooky .......... for me. :-)


Apparently some interesting stuff
has been going on since 2010, the
below url may tell about it.

http://xenotechresearch.com/


http://tinyurl.com/q6ldyef

The tinyurl is for the 795 byte url below;

http://xenotechresearch.com/?ts=fENsZWFuQmxhY2tDYWYzfHxjYWFhNXxidWNrZXQwNzl8YnVja2V0MDYyfGJ1Y2tldDA0OHx8MHx8NTE5ZGVjMzBjZmZlOHx8fDEzNjkzMDQxMTIuOTA1fDhjZDhkNWM2YWRiNjEzYmUxMGYzZGU3NTkzNDgyMGExZjFhNTliNDd8fHx8fDF8&query=Small
Solar Power
Kits&afdToken=AG06ipB6kB3Q45iTzMTC3vmnk2hEB0K2ewoTCK3z36v_q7cCFQ1Z7AodXTYAjRgBIAVQ16OgAVDRkqEBUK6ToQFQsoajAVDWubAIUL6qqA5Qv-_iDlDq_pgPUO_-mA9Q1P-YD1Cxra8PUKWlzg9Q8rTOD1D57c4PUMu63A9Q1LvcD1DBgfcPUNO_vRBQzbb4EFCPzpYRUPK7tRFQ9bu1EVDq29ASUJTu_xNQveXpFVCfrrkdUKH01CBQoLqRIVDC2ZEhUNHZkSFQ6dqRIVDIt9AiUNOxrSlQ3rGtKVDfsa0pUOqv_0NQqbb_UVCrtv9RUIfZ2V9Qk5KTjwFQ6aaTjwFQycuUlQFQ9t7KowFQwLuqpwFQwJnzwAFQ4fGwxwFQgq2KyAFQwqLHmgNQpOfImgNQsefImgNQiIvJnQNQ7orMnQNQwITYnQNQlovYnQNQqa6KjQVo16OgAWjRkqEBaK6ToQFosoajAXFc7W_Mn4mQU4IBEwii8-ir_6u3AhWNWOwKHS8oAAeNAV0TvoORAciAFNM8Q8AM

http://www.ul-solar.com/RV_Solar_Power_Kit_Solar_Panel_s/79.htm




gordo

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May 23, 2013, 12:44:34 PM5/23/13
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On Thu, 23 May 2013 10:28:52 +0100, Sleepalot
<sleep...@yahoo.co.uk> wrote:

Amazing.That is hot stuff.

Paul Aubrin

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May 24, 2013, 2:43:23 AM5/24/13
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On Wed, 22 May 2013 19:45:21 +0100, Sleepalot wrote:

> <http://www.wimp.com/meltsrock/>

A Solar Furnace was built in 1949 at Odeillo in Pyrenees mountains, and
improved in 1970. It was used to produce clean high temperatures (3500°C
at the focal point, although the text mentions "up to 16,000°C depending
on the process installed").
https://en.wikipedia.org/wiki/Solar_furnace
http://www.foursolaire-fontromeu.fr/
The furnace has been used for research, no industrial use has been
derived.

emoneyjoe

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May 24, 2013, 6:57:52 AM5/24/13
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That is the device shown in at least one
of the wimp videos, I think.

I made a mirror that would melt solder
in 1956 out of flat household mirror cut
in a circle and cemented in a 15" Buick
wheel with a tubeless tire valve put in
backwards, and a flat plate cemented
in the other side of the wheel with
aquarium cement (tar).

I used the vacuum from the intake
manifold of a car engine to curve the
mirror, and had a valve to adjust the
curve to get a focal length of about
40 inches.

The image of the sun was not
good, but it did melt solder.

Fresnel lenses have limitations
in how many suns can be concentrated,
hopefully new plastics hold up better
in the sun than they did 50 years ago.






Sleepalot

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May 24, 2013, 11:09:54 AM5/24/13
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Kudos to you for your experiment. I'd've thought an array of small flat
mirrors would be easier (cheaper, safer,...) to implement.



emoneyjoe

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May 24, 2013, 5:52:12 PM5/24/13
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On Fri, 24 May 2013 16:09:54 +0100, Sleepalot <sleep...@yahoo.co.uk>
wrote:
The vacuum curved mirror in a wheel was
by far the easiest, I did the flat segmented
dish in 1973 using the extruded lead H
channels used in church windows.

I had to devise a way to get the pointing
just right, and I think one of the customers
that bought mirror strips and lead from me
used the method to make the big satellite
dishes.

I was invited to Huntsville to learn the
process of getting a government grant,
but I didn't go. Most of the action then
was during Carter, but by 1981 most of
the grants ran out and the solar divisions
went out of business, the prices on most
of the stuff was too high.

I designed (invented) a way to draw
a parabola instead of plotting it, I thought
that was a big deal.






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