Consumer Electronics
Gadgets & Other Electronics
Fresnel Lenses

38" FRESNEL LENS FRAMED SUN SOLAR WATER HEATER SPOT

38" FRESNEL LENS FRAMED SUN SOLAR WATER HEATER SPOT
Time left: (8/30/2008 4:31:04 PM) Seller:
Bids: 20 greenpowerscience
Current Bid: USD 54
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Green Power Science is dedicated to the backyard scientist. Our belief is that some of the smartest people in the world discover the best things through trial and error IN THEIR OWN BACKYARDS OR GARAGES. We welcome all levels of creativity and hope you find the answers you are looking for. US SHIPPING $15 - WOW THATS A GREAT DEAL!!!!! O CANADA $27 Up for auction is a CRYSTAL CLEAR SPOT FRESNEL LENS HORIZONTAL MOUNT THE ACRYLIC ON THIS LENS IS THE SAME AS THE YOUTUBE VIDEOS BUT THIS AUCTION IS FOR A SMALLER LENS PICTURED VERTICAL DESIGNED FOR HORIZONTAL SOLAR USAGE! CAUTION! THIS IS A STRONG LENS PICTURED VERTICAL DESIGNED FOR HORIZONTAL SOLAR USAGE! FRESNEL LENS CLEAR SPOT LENS 38 INCHES 31" X 21" ______________________________________________________ SCIENTIFIC DATA AND PHOTOS ©2007 PROPERTY OF GREENPOWERSCIENCE AND MAY NOT BE COPIED OR USED FOR OTHER EBAY LISTINGS. DOING SO MAY RESULT IN COPYRIGHT INFRINGEMENT. SIZE-----------------31H X 21WPOWER EST.-----------8.3 BEAM-----------------SPOTBEAM SIZE MAX POWER--.3 INCH (2.5" OUTER AREA 900 F) FOCAL LENGTH---------31 INCHESWEIGHT --------------7 LBS.MAX TEMP. CLIMB------1490 F IR THERMOMETERMAX COLLECTION-------1700F MATERIAL EST........... MATERIALS TESTED WATER------------12oz. BOILS 100 sec. WOOD-------------FLAME .7 SEC. ZINC-------------MELTS .5OZ 14 GRAMS - 21 SEC. GLASS------------MELTS 1" X 1/4" BROWN GLASS 27 SEC. CONCRETE---------GLOW 15 SEC. EXPOSURE, MELT 70 SEC. NOT ALL FRESNEL LENSES ARE CREATED EQUALLY. ALL THE LENSES WE SELL WERE SPECIALLY SELECTED FOR THEIR SUN COLLECTING ABILITIES. ALL HAVE BEEN TESTED AND THEY ARE THE BEST OF THE BEST FOR SOLAR NEEDS.AS WE LEARNED YEARS AGO, NOT ALL FRESNEL LENSES WILL WORK WELL. WE PURCHASED 159 LENSES AND ONLY 37 WERE USABLE FOR SUN COLLECTION FROM THAT BATCH,THE REST WERE SCRAPPED. I WAS A PART OF A SOLAR ENGINE PROJECT. WE ONLY SELL SOLAR TESTED LENSES UNLESS OTHERWISE SPECIFIED. ______________________________________________________ THIS LENS HAS SCRATCHES WILL NOT AFFECT PERFORMANCE FOR SOLAR STUFF CUSTOM MITER CORNERS SECURE MOUNTING INSERT MOUNTING HOLES PRE-DRILLED JUST ADD BOLT WARNING NEVER LEAVE LENS IN SUN Above photos show person in large rock bed work area and a steel washer that was exposed for 40 seconds. Also boiling water. ALL IMAGES AND VIDEOS © GREENPOWERSCIENCE.COM WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. The lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit WITH A SPOT LENS AND 900 degrees farenheit WITH A LINEAR LENS. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and agrees that separating the lens from the protective cover is done so at their own risk and responsibility. If you are crazy enough to use this for sun collection I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.AGAIN!!!!!!!!!!!!!WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase.WARNING : I have included a Youtube video to demonstrate the power of this type of lens when placed in the sun. Lens should NEVER BE LEFT IN THE SUN UNATTENDED. Fresnel lenses concentrate several square feet of sunlight down to less than 1/2". My personal tests have resulted in surface temperatures in excess of 2000 degrees farenheit. VERY DANGEROUS. IF YOU DO USE THIS FOR SCIENTIFIC PURPOSES, DO NOT LEAVE OUTSIDE OR NEAR SUNLIGHT EVER. TREAT IT AND RESPECT IT AS A FURNACE OR BLOWTORCH. Stuff instantly can catch on fire. Buyer assumes all risks and responsibility. I strongly recomend wearing protective eye goggles (wielding/blow torch) to prevent eye damage. Protective clothing (fireproof) is also recomended as well as a large open space away from structures and autos. CHILDREN OR PETS SHOULD NEVER BE IN WORK AREA! NEVER STORE EXPOSED LENS NEXT TO ANY STRUCTURE!!!!!!!!!! NEVER LEAVE LENS UNCOVERED WHEN NOT IN USE!!!!! By bidding on this item, buyer agrees to accept all responsibilities and AGREES TO hold seller harmless from injury or damages resulting in the use and possible mis-use of this item. MUST BE 18 years or older to purchase. THIS IS NOT A TOY, REAL SCIENCE STUFF!!!!! Happy bidding and goodluck. SHIPPING IS $15. ITEM WILL SHIP VIA FEDEX GROUND OTHER SPOT LENSES IN ACTION FREQUENTLY ASKED QUESTION: SPOT LENS VS. LINEAR LENS, WHAT IS THE DIFFERENCE? I MADE THIS WEB PAGE LINK TO EXPLAIN THE DIFFERENCE. FRESNEL LENSES (LINEAR AND SPOT) understanding the difference. PLEASE CONTACT ME THROUGH EBAY FOR ANY QUESTIONS. I WOULD BE GLAD TO HELP!