P2 FRESNEL LENS PARABOLIC MIRROR APERTURE SOLAR FRESNEL POWER CPV

http://www.greenpowerscience.com/ This is Part 2. Solar Training, Understanding optics of Parabolic Mirrors and Fresnel Lenses. Cheap Telescope astronomy. Telescope first surface mirror.

PART 1 IS HERE:

http://www.youtube.com/watch?v=QpkWTdXwTnw

Category:

Science & Technology

Tags:

• APPLE
• APERTURE
• FOCAL
• LENGTH
• SUN
• COLLECT
• SOLAR
• POWER
• CAMERA
• LENS

[Jarathe]

I love your videos dude, but it's freSnel lens; not frenel lens.

[GREENPOWERSCIENCE]

@Jarathe :-) pronounced /freɪˈnɛl/ fray-NELL

[ston932]

wtf ??? whre did you ge this hughe telescope mirrir and do you have any idea what such an miror is worth ? it hurts me to see it being used as an sun colector (i hope something is badly wrong with this mirror so it couldnt be used for an telescope anyway)

[GREENPOWERSCIENCE]

It is nearly perfect, there are some very very minor scuffs, I got all the finger prints off of it. This was for sale as a scrap item for $79:-)

[sunpaw]

@GREENPOWERSCIENCE

where can i get a parabolic mirror like you use for solar cooking...

i live in Canada but i need one very badly for an experiment I'm doing

[GREENPOWERSCIENCE]

@sunpaw check our website, there are links on the Fresnel Lens Page:-)

[calebp9503]

the focal length of the telescope that mirror came out of is determined by the secondary mirror and I'm pretty certain it came from an F10 schmidt cassegrain so if that mirror is 16" in diameter, the focal length of the telescope it came from would be 4064mm ... you got a hell of a deal on that mirror, its worth about $800 on Ebay.

[calebp9503]

@ston932 for real! looks like a 16" schmidt cassegrain mirror! worth about $800 on ebay

[sjoerdbeukers]

@Jarathe yeah no nonsense.. save the whale.. hippy crap.. like the most.

[TheDestroyerofdoom]

thumbs up if you skipped most of it.

[gabigowriel]

where can that thick glass mirror "first mirror" be bought and for how much?

:-)

[kiwipk121]

I think bear should have one of these? =D

[jonasreinoso1]

you sold mirrow to telescopy?

[Yeuxvert]

Depending on the precise shape of the large telescope mirror, it is worth hundreds to thousands of dollars. If well made, the shape is precise to within 1/20th of a thousandth of a millimeter, over the entire diameter of the mirror. Unless you are going to never use it in a telescope again (which would be a shame), you should never touch the surface, and if you must touch it, wear clean soft cotton gloves. Sounds crazy, but the surface is so precisely shaped and smoothed that even fingerprints

[OKMUNWURX]

Thanks for sorting out mirror diameter vs focal length. f=Fl/d

[DragonToko]

What is this video about? About little of everything?