elessar_telkontar

I'm taking a course on astrophysics, and at this time I get the astrophysics of stars. In this section, I have to use the planck radiation formula, but I have got it for the frecuency of radiation. What's the one for wavelenght? I have found one but I tried to reconstruct the one for frecuencies but I can't do it:

The one for wavelength I have found is:

Bf(T)=((2hc2)/(l5))(1/ehc/klT-1)

Related Introductory Physics Homework News on Phys.org

SpaceTiger

Staff Emeritus
Gold Member
elessar_telkontar said:
The one for wavelength I have found is:

Bf(T)=((2hc2)/(l5))(1/ehc/klT-1)

Just substitute:

$$\lambda=\frac{c}{\nu}$$

and

$$d\lambda=-\frac{c}{\nu^2}d\nu$$

That'll give you the frequency formula.

Last edited:

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving