Is it possible - Stefan Boltzman Law

  • Thread starter Thread starter SciencePF
  • Start date Start date
  • Tags Tags
    Law stefan
AI Thread Summary
The discussion revolves around determining which of two stars, with temperatures of 12,000 K and 3,000 K, will die first based solely on their intensity graphs. Key relationships in stellar astrophysics indicate that higher effective temperatures correlate with greater bolometric luminosity, which in turn is related to mass. Since luminosity is directly linked to mass, the hotter star is likely more massive and will have a shorter lifespan compared to the cooler star. Therefore, the star at 12,000 K is expected to die first due to its higher mass and luminosity. Understanding these relationships is crucial for analyzing stellar lifetimes.
SciencePF
Messages
55
Reaction score
0
I have an intensity graph versus wavelenght of the light emited by two stars.

For one of stars the curve of the graph temperature is 12000 K; for the other 3000 K.
Is it possible, only from this data, to know which star will die first?

Thanks
 
Physics news on Phys.org
three relationsship in basic stellar astrophysics:

1. (effective) temperature - Bolometric Luminosity

2. Lumonosity - mass

3. Mass - lifetime
 
these shold be mentioned in your coursebook =)
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is（Figure 2）： F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Question on how much intensity of light has been scattered
Replies
4
Views
2K
Power Radiated From a Copper Cube
Replies
3
Views
802
Why is the Stefan-Boltzman formula for this problem like this?
Replies
10
Views
3K
Stefan-Boltzman Law Proof with Regards to Solar Radiation
Replies
4
Views
4K
What is the explanation for the differential form of Planck's law?
Replies
11
Views
2K
Investigating Unexpected Results in Elementary Experiment
Replies
35
Views
4K
How to calculate Laws of Thermal Radiation
Replies
2
Views
3K
Heat transfer by radiation between two plates
Replies
10
Views
3K
At What Wavelength is the Peak of the Planet's Blackbody Intensity Function?
Replies
2
Views
4K
Intensity of Stars and the Inverse Square Law Problem
Replies
10
Views
3K

Hot Threads

Recent Insights

Back
Top