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Redefining temperature with precision lasers

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  Redefining temperature with precision lasers Sam Wormley <swormley1@gmail.com> - 2015-10-14 14:48 -0500
    Re: Redefining temperature with precision lasers jimp@specsol.spam.sux.com - 2015-10-14 20:08 +0000
      Re: Redefining temperature with precision lasers Sam Wormley <swormley1@gmail.com> - 2015-10-14 18:20 -0500
        Re: Redefining temperature with precision lasers jimp@specsol.spam.sux.com - 2015-10-15 00:45 +0000

#526150 — Redefining temperature with precision lasers

Redefining temperature with precision lasers
> http://phys.org/news/2015-10-redefining-temperature-precision-lasers.html

> Published today in the journal Nature Communications, the researchers
> from the University of Adelaide, University of Queensland and
> University of Western Australia, have come up with a new way to
> determine Boltzmann's constant, a number which relates the motion of
> individual atoms to their temperature.
>
> The experiments contribute to a worldwide scientific effort in
> redefining the international unit of temperature: the kelvin. (Zero
> kelvin or 'absolute zero' is the absence of all thermal energy and
> equivalent to -273.15 degrees celsius).
>
> "Although temperature is a familiar concept to all of us, remarkably
> it can only be measured accurately at a handful of locations around
> the globe," says project leader, Professor Andre Luiten, Director of
> the University of Adelaide's Institute for Photonics and Advanced
> Sensing (IPAS), where the experiments were conducted.
>
> The researchers used lasers to make highly accurate measurements of
> the speed of individual atoms moving in a gas.
>
> "An atom sitting at rest will absorb light of a particular frequency
> or colour—if it is moving towards you or away from you then the
> absorbed light is very slightly changed because of something called
> the Doppler effect," says Professor Luiten. "This is exactly the same
> effect that makes a police siren sound different depending on whether
> the car is moving towards you or away. We use a pure laser to measure
> these changes in light absorption, from which we can infer the speeds
> of the atoms and the temperature of the gas."


-- 

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to the discussion of physics, news from the physics
community, and physics-related social issues.

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#526161

Sam Wormley <swormley1@gmail.com> wrote:
> Redefining temperature with precision lasers
> 
>> "Although temperature is a familiar concept to all of us, remarkably
>> it can only be measured accurately at a handful of locations around
>> the globe,"

This is a very big reason why most "climate science" is just arm
waving guesswork, spamming shit head.


-- 
Jim Pennino

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#526190

On 10/14/15 3:08 PM, jimp@specsol.spam.sux.com wrote:

> This is a very big reason why most "climate science" is just arm
> waving guesswork, spamming shit head.
>
>

   The jimp is either misinformed or has been brain washed by political
   powers. Probably the latter.

   Redefining temperature with precision lasers
> http://phys.org/news/2015-10-redefining-temperature-precision-lasers.html

 > Published today in the journal Nature Communications, the researchers
 > from the University of Adelaide, University of Queensland and
 > University of Western Australia, have come up with a new way to
 > determine Boltzmann's constant, a number which relates the motion of
 > individual atoms to their temperature.
 >
 > The experiments contribute to a worldwide scientific effort in
 > redefining the international unit of temperature: the kelvin. (Zero
 > kelvin or 'absolute zero' is the absence of all thermal energy and
 > equivalent to -273.15 degrees celsius).
 >
 > "Although temperature is a familiar concept to all of us, remarkably
 > it can only be measured accurately at a handful of locations around
 > the globe," says project leader, Professor Andre Luiten, Director of
 > the University of Adelaide's Institute for Photonics and Advanced
 > Sensing (IPAS), where the experiments were conducted.
 >
 > The researchers used lasers to make highly accurate measurements of
 > the speed of individual atoms moving in a gas.
 >
 > "An atom sitting at rest will absorb light of a particular frequency
 > or colour—if it is moving towards you or away from you then the
 > absorbed light is very slightly changed because of something called
 > the Doppler effect," says Professor Luiten. "This is exactly the same
 > effect that makes a police siren sound different depending on whether
 > the car is moving towards you or away. We use a pure laser to measure
 > these changes in light absorption, from which we can infer the speeds
 > of the atoms and the temperature of the gas."


-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

[toc] | [prev] | [next] | [standalone]

#526202

Sam Wormley <swormley1@gmail.com> wrote:
> On 10/14/15 3:08 PM, jimp@specsol.spam.sux.com wrote:
> 
>> This is a very big reason why most "climate science" is just arm
>> waving guesswork, spamming shit head.
>>
>>
>   The jimp is either misinformed or has been brain washed by political
>   powers. Probably the latter.

The spamming shit head has his head so far up his ass he hasn't a
clue what a pile of arm waving crap most "climate science" is.

The ass hole spamming shit head believes that one can take 10 readings
of the temperture with a thermometer with an accuracy of +/- 0.1 degree,
average the readings and have the temperture to three decimal places.


-- 
Jim Pennino

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