roosl
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This is not a priority for me (like one member sez, "if you want to burn stuff, get a lighter"), but a popular topic and many questions are about burning stuff. So, let's have some fun...
I set the laser on power level 3 for these tests, and set it about 5 feet from the target. I laid a towel on the counter to eliminate the surface reflection, and set the ISO on the camera down to 400.
One thing that affects a laser's burn is the color of the object (how it absorbs light/heat). I tried several colors of paper first. Oh, by the way, yes it does burn your skin (stings very quickly). I did not hold my hand there and grit my teeth to see how long I could take it.
The black (also my backdrop), is a heavy card stock. After a few seconds, it began to smoke, and a small hole appeared. Next were colored post-it notes: The purple burned through in about 1 second, the red even quicker, the yellow took about 3 seconds. The green did nothing but reflect intensely, as did the ordinary white paper. The intensity of the light is such that it's difficult to see the color of some paper. I may redo this test, since there is not much visible smoke, etc. in these shots. But hey, it was fun! Clicking an image opens the 800x600 jpg.
Black 
Purple 
Red
Yellow 
Green 
White
Lets try an onion (because it's handy here in the kitchen). Then, the proverbial question, will it light a cigarette? The onion did nothing but reflect intensely (more so than the white paper), though I left the beam on it for almost 2 minutes (I wonder if I turned the power up to 9). I should try a tomato!
Onion 
Cigaratte - Yes, it does (very quickly), but I think I'll just flick my Bic.
Like my previous "first beam shots" post, this is also on my site in my lasers page, wherein I'll post such shtuff as I experiment and learn. My usual intended audience at Roosl.com is not necessarily into lasers, but it's fun to see who visits, and I have links back to LPF, and to Optotronics.
I set the laser on power level 3 for these tests, and set it about 5 feet from the target. I laid a towel on the counter to eliminate the surface reflection, and set the ISO on the camera down to 400.
One thing that affects a laser's burn is the color of the object (how it absorbs light/heat). I tried several colors of paper first. Oh, by the way, yes it does burn your skin (stings very quickly). I did not hold my hand there and grit my teeth to see how long I could take it.
The black (also my backdrop), is a heavy card stock. After a few seconds, it began to smoke, and a small hole appeared. Next were colored post-it notes: The purple burned through in about 1 second, the red even quicker, the yellow took about 3 seconds. The green did nothing but reflect intensely, as did the ordinary white paper. The intensity of the light is such that it's difficult to see the color of some paper. I may redo this test, since there is not much visible smoke, etc. in these shots. But hey, it was fun! Clicking an image opens the 800x600 jpg.
Black 
Purple 
Red 
Yellow 
Green 
WhiteLets try an onion (because it's handy here in the kitchen). Then, the proverbial question, will it light a cigarette? The onion did nothing but reflect intensely (more so than the white paper), though I left the beam on it for almost 2 minutes (I wonder if I turned the power up to 9). I should try a tomato!
Onion 
Cigaratte - Yes, it does (very quickly), but I think I'll just flick my Bic.Like my previous "first beam shots" post, this is also on my site in my lasers page, wherein I'll post such shtuff as I experiment and learn. My usual intended audience at Roosl.com is not necessarily into lasers, but it's fun to see who visits, and I have links back to LPF, and to Optotronics.
