|
#1
●
12-09-2012, 10:44 AM
| ||||||||
 My Rank: MAJOR Poster Rank:11 Join Date: Jun 2009 Posts: 93,130
Contributions: 226
Mentioned: 91 Post(s) Quoted: 2009 Post(s)
| ||||||||
|
Burning Stuff with Solar Power
This 4 foot magnifying lens melts concrete, and everything else in it's way. |
|
#4
●
12-11-2012, 11:38 AM
| ||||||||
| My Rank: PRIVATE Poster Rank:5941 Join Date: Jun 2009 Posts: 39 Mentioned: 0 Post(s) Quoted: 0 Post(s)
| ||||||||
|
Re: Burning Stuff with Solar Power
yes it is called a Fresnel lens, you can find them in old rear projection tvs and you can easily make viable green energy water heaters and stoves with these lenses! good vid  |
|
#6
●
01-01-2013, 01:36 PM
| ||||||||
 idiot savant with a ban stick Poster Rank:24 Join Date: Oct 2006 Posts: 54,331
Contributions: 29
Mentioned: 62 Post(s) Quoted: 236 Post(s)
| ||||||||
|
Re: Burning Stuff with Solar Power
__________________ "Knowledge is often mistaken for intelligence. This is like mistaking a cup of milk for a cow" |
