Wavelength approaching the Planck length

[YoungPhysicist]

If I heat up an object,the object emits a electromagnetic wave with a shorter and shorter wavelength.

But if I heat an object up to Planck temperature, and making the EM wave that it emits has a wavelength of Planck distance,what will happen when I heat it up even more? Will the wavelength become even shorter,or it is not possible?

 

[DennisN]

Hi Young physicist,

planck distance

I assume you mean Planck length.

[...]and making the EM wave that it emits has a wavelength of Planck distance,what will happen when I heat it up even more? Will the wavelength become even shorter,or it is not possible?

Do you think the Planck length is the shortest possible length? If so, could you please try to find a good physics source that says so?

 

[phyzguy]

The Planck length and the Planck temperature are many, many orders of magnitude beyond where are current theories have been tested. So nobody really knows what would happen in the scenario you are asking about. Also, there is no conceivable way to heat up an object to the Planck temperature. To put it into perspective, suppose I had a 1 g object and I wanted to heat it up to the Planck temperature. The object has about 10^23 atoms in it, and each atom would need to have ~kTp of energy, which is ~10^9 Joules. So we would need to impart 10^32 Joules of energy to this 1 g object. Mankind's total energy usage is about 10^21 Joules/year. So you would need to store up our total energy usage for 100 billion years and then give it all to 1 g of matter. Sound feasible?

 

[YoungPhysicist]

So we would need to impart 10^32 Joules of energy to this 1 g object. Mankind's total energy usage is about 10^21 Joules/year. So you would need to store up our total energy usage for 100 billion years and then give it all to 1 g of matter. Sound feasible?

Not quite feasible,but still possible