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sunnus (November 30, 1999 at 12:00 am)
look up solar heaters. you can make them urself!
sunnus (November 30, 1999 at 12:00 am)
Where did you get the lens?
db98647 (November 30, 1999 at 12:00 am)
Cool!
menderfire9 (November 30, 1999 at 12:00 am)
Thanks for the fascinating videos, but I am just a newbe at science looking for practical ways to get off the grid and light-up and heat-up my dark and chilly cabin ... can you tell me how to put this solar source to some practical use other than burning up my damaged kitchen ware? I'm running out of pots to burn up!
GREENPOWERSCIENCE (November 30, 1999 at 12:00 am)
Thank you for enjoying our videos and for taking the time to comment and follow up.
theoriginalemje (November 30, 1999 at 12:00 am)
thanks for your answer. I have checked out your newer videos's. Much better! Cool experiments.
GREENPOWERSCIENCE (November 30, 1999 at 12:00 am)
Camera man had wielding goggles on and hand held a special filter to protect the CCD in the camera from the intense light. Check out our latest videos shot with our Canon XHA1:-) It has manual F stop, shutter and a neutral density filter. Helps a lot. :-) Thank for the comment.
theoriginalemje (November 30, 1999 at 12:00 am)
gotta say the camera man needs practice.....
OtroNocturno (November 30, 1999 at 12:00 am)
If you go slowly focusing the fresnel over concrete probably you will melt it; but if you focus the lens on the surface and you move suddenly along the surface probably you will hear concrete cracking like "pop corn". I have done that before. Congratulations You are doing a wonderful work.
GREENPOWERSCIENCE (November 30, 1999 at 12:00 am)
To break concrete you need to heat for a few minutes and apply water. If the melting point of you rocks are below 2000f yes.
Please let me know if you have any other questions.
Thank You:-) |
