Finding Planck's Formula Transforms for High/Low Frequencies

[vahide]

could you find the planks formulas transformation for high and low frequencies please.

 

[cristo]

Do you mean http://en.wikipedia.org/wiki/Planck's_law_of_black_body_radiation]this?[/PLAIN] If so, I'm sure you could've found it!

 

[vahide]

planks law

could you declare the planks formula through \lambda please

 

[vahide]

Do you mean http://en.wikipedia.org/wiki/Planck's_law_of_black_body_radiation]this?[/PLAIN] If so, I'm sure you could've found it!

thank you
i found that but i need proof of this.

 

[cristo]

could you declare the planks formula through \lambda please

You'll have to help me help you. Is the link I provided for you any use? If so, you (should) know a formula relating frequency and wavelength.

 

[cristo]

thank you
i found that but i need proof of this.

There's a proof on that page!

Note that you will probably know a lot more than me about this topic.

 

[vahide]

planks law

could you prove this
\lambda_{max}*T=constant=x
and find x
by planks formula?

 

[malawi_glenn]

could you prove this
\lambda_{max}*T=constant=x
and find x
by planks formula?

yes, that is Wiens displacement law.
Just Do the "approximation" Wien "did" and find maximum. I.e remove the (-1) in the denominator in placks law.

Wiens radiation law is for small wavelengths, and Rayleighs is for large. Planck is for all.
Now try figure out WHY the (-1) is removed in order to get Wiens law from placks law.