Green Power Science the proposed TV SHOW
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SOLAR HOT WATER
WINDMILL WIND TURBINES
FRESNEL LENSES (LINEAR AND SPOT)
PARABOLIC MIRRORS make your own
STIRLING ENGINES
STEAM ENGINES
Steam Boiler PARTS
GREENPOWERSCIENCE
YOUTUBE VIDEO LIBRARY
Giant 34 inch by 44 inch fresnel lens on
a custom built stand.
Steel washer after 40 seconds.
BUY A LARGE FRESNEL LENS
FRESNEL.BIZ
Boiling Water.
SOLAR COOKING
DISTILLED WATER FROM THE SWAMP
DESALINATION - SEA WATER INTO DRINKING WATER
NEW!!! SOLAR HHO CREATE HYDROGEN
NATURE
PARABOLIC TROUGH MIRROR
BIG FRESNEL LENS
FRESNEL LENS
http://en.wikipedia.org/wiki/Fresnel_lens
A Fresnel lens is a type of lens invented by French physicist Augustin-Jean Fresnel (pronounced fre-NELL in scientific and lighting applications, although often pronounced FREZ-nell). Originally developed for lighthouses, the design enables the construction of lenses of large aperture and short focal length without the weight and volume of material which would be required in conventional lens design. Compared to earlier lenses, the Fresnel lens is much thinner, thus passing more light and allowing lighthouses to be visible over much longer distances.
When placed in the sun, a fresnel lens will act as a giant magnifying glass and concentrate light to a very small point. Most large fresnel lenses will concentrate several square feet of sunlight to less than an inch resulting in a hot spot over 2000 degrees Fahrenheit. This will cause wood to instantly catch on fire or zinc and copper metal to melt in a few seconds or even burn and vaporize. We have boiled 12 oz. of water in a dark glass bottle in 90 seconds and burned a hole in a stainless steel bowl.. One gallon of water was boiled in 30 minutes.
HELPFUL HINTS:
The sun is always moving across the sky (earth rotation) and the angle of the lens must also change for maximum results. It is helpful to have a table/stand that can be adjusted up and down.
WARNING:
Never place hand in beam, instant serious burn. Surfaces and objects can get 2000 degrees. This will send you to the ER. Never experiment without protective gear. Gloves (fireproof). Never leave lens in the sun unattended or you could start a fire. Never let kids play with the lens or use while pets are around. WEAR PROTECTIVE wielding eye wear. The spot formed by the lens is equivalent to looking at the sun. Vision loss is possible without proper eye wear. Some objects have remained hot for over an hour even out of the light. It can be quite deceiving how strong the sun is and anyone using these lenses for sun collection should get in the habit of treating in like a 2000 degree furnace or blowtorch.
FRESNEL LENSES FOR SALE ON EBAY
http://en.wikipedia.org/wiki/Fresnel_lens
A Fresnel lens is a type of lens invented by French physicist Augustin-Jean Fresnel (pronounced fre-NELL in scientific and lighting applications, although often pronounced FREZ-nell). Originally developed for lighthouses, the design enables the construction of lenses of large aperture and short focal length without the weight and volume of material which would be required in conventional lens design. Compared to earlier lenses, the Fresnel lens is much thinner, thus passing more light and allowing lighthouses to be visible over much longer distances.
When placed in the sun, a fresnel lens will act as a giant magnifying glass and concentrate light to a very small point. Most large fresnel lenses will concentrate several square feet of sunlight to less than an inch resulting in a hot spot over 2000 degrees Fahrenheit. This will cause wood to instantly catch on fire or zinc and copper metal to melt in a few seconds or even burn and vaporize. We have boiled 12 oz. of water in a dark glass bottle in 90 seconds and burned a hole in a stainless steel bowl.. One gallon of water was boiled in 30 minutes.
HELPFUL HINTS:
The sun is always moving across the sky (earth rotation) and the angle of the lens must also change for maximum results. It is helpful to have a table/stand that can be adjusted up and down.
WARNING:
Never place hand in beam, instant serious burn. Surfaces and objects can get 2000 degrees. This will send you to the ER. Never experiment without protective gear. Gloves (fireproof). Never leave lens in the sun unattended or you could start a fire. Never let kids play with the lens or use while pets are around. WEAR PROTECTIVE wielding eye wear. The spot formed by the lens is equivalent to looking at the sun. Vision loss is possible without proper eye wear. Some objects have remained hot for over an hour even out of the light. It can be quite deceiving how strong the sun is and anyone using these lenses for sun collection should get in the habit of treating in like a 2000 degree furnace or blowtorch.
FRESNEL LENSES FOR SALE ON EBAY