Killua
07/08/17 11:50PM
You can actually cool something with a laser
bipface
07/09/17 07:33AM
Killua said:
You can actually cool something with a laser

how?
Killua
07/09/17 03:17PM
bipface said:
Killua said:
You can actually cool something with a laser

how?


I can not go into too much detail here but the basic idea of it is this:

When you fire a laser (which is focused light) on a veeery specific wavelength at an object, that object will release whats called a photon.

This photon carries more energy away in the form of light than it absorbs. What does that mean?

Well heat is one of the, if not THE, most basic form of energy. In fact its so basic that conveying heat energy into other forms of energy is one of the most basic principles we utilize in every day life.

Since Heat is energy, taking away energy is cooling things down. Thats why "Cold" is not really a status but rather the absence of energy in a system.

Now here we go back to the photon. When a photon takes energy with it, the object looses that energy and thus looses heat and cools down.

Now we are not talking about a car or an apple here of course. But rather about atomic and molecular samples.

This technique is for example used to cool these samples to absolute zero.

So yeah.


SCIENCE
bipface
07/09/17 04:55PM
Killua said:
When you fire a laser (which is focused light) on a veeery specific wavelength at an object, that object will release whats called a photon

but the object doesn't absorb any of the photon energy you're shooting at it (the laser beam) ?
Killua
07/09/17 05:45PM
bipface said:
Killua said:
When you fire a laser (which is focused light) on a veeery specific wavelength at an object, that object will release whats called a photon

but the object doesn't absorb any of the photon energy you're shooting at it (the laser beam) ?
As is said i am not that well versed in this kind of science but apperantly the energy that the photon caries away from the object is bigger than the absorbed energy from the laser. Which kinda makes sense.

So essentially they fire a laser to free a photon which in turn carries away more energy than is brought in thus cooling the thing
bipface
07/09/17 05:49PM
Killua said:
. . .

sounds feasible i guess

i'm not great at physics either
Nell21
07/09/17 07:06PM
Did you know that if you spell Ekans backwards..
Kumquat
07/09/17 07:09PM
Nell21 said:
Did you know that if you spell Ekans backwards..


Remove the last four letters of my username, then spell the rest backwards.
Miss_Vulf
07/09/17 07:20PM
YOU'RE A KID NOW YOU'RE A SQUID NOW
Cephalopods have green blood.
Lt.ShinySides
07/10/17 01:17AM
Miss_Vulf said:
Cephalopods have green blood.
Blue, actually. Although I suppose blue hues can look greenish.
Killua
07/11/17 06:59PM
There are NO Black Roses
bipface
07/12/17 09:57AM
Killua said:
There are NO Black Roses

there are no black humans either, come to think of it
Miss_Vulf
07/12/17 10:42AM
bipface said:
Killua said:
There are NO Black Roses

there are no black humans either, come to think of it
www.guinnessworldrecords....ords/most-tattooed-person
bipface
07/12/17 11:51AM
Miss_Vulf said:
bipface said:
Killua said:
There are NO Black Roses

there are no black humans either, come to think of it
www.guinnessworldrecords....ords/most-tattooed-person

well i could tattoo a rose black too
Amo
07/12/17 07:31PM
Only one human so far has been directly hit by a meteorite.
<<<3 4 567>>>


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