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1W Blue Laser vs. Thermometer!

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Are we going to rate lasers by "soups and popcorn" now? Maybe the "Campbell's Laser Scale".
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Still though - it takes an 1100W microwave to heat up a cup of coffee. Do you really think that a 1W laser could do it?
 
Wolfman29 said:
Still though - it takes an 1100W microwave to heat up a cup of coffee. Do you really think that a 1W laser could do it?
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A microwave doesn't really focus all it's power on the coffee the way a laser would... I dunno tho... 1 Watt might not be enough...


We could use the "Campbell Power" scale :P
 
Assuming 100% absorption of light and no loss of heat, it would take nearly 22 hours for a 1W laser to heat up a cup of water to boiling from 20ºC. When compared to any other heating device, 1W is a very tiny amount of power. It would be much easier to heat up water with an incandescent light bulb.
 
styropyro said:
Assuming 100% absorption of light and no loss of heat, it would take nearly 22 hours for a 1W laser to heat up a cup of water to boiling from 20ºC. When compared to any other heating device, 1W is a very tiny amount of power. It would be much easier to heat up water with an incandescent light bulb.
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I would be more fun with a laser even if it took a full day :P
 
styropyro said:
Assuming 100% absorption of light and no loss of heat, it would take nearly 22 hours for a 1W laser to heat up a cup of water to boiling from 20ºC. When compared to any other heating device, 1W is a very tiny amount of power. It would be much easier to heat up water with an incandescent light bulb.
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Very true ^^^ The only place that lasers excel is energy density. They can concentrate their energy on a VERY small area which can make the point extremely hot as for heating large volumes they are quite weak.
 
Helios said:
Very true ^^^ The only place that lasers excel is energy density. They can concentrate their energy on a VERY small area which can make the point extremely hot as for heating large volumes they are quite weak.
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So a thimble of soup :P

Also they excel is coolness density!
 
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I remember seeing a video of a guy with his CO2 laser warming up his cup of coffee in the morning (was a huge, like 50kW CO2).
 
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