# Stefan's Law

Stefan's Law, a fundamental principle in thermodynamics and radiative heat transfer, describes the power radiated from a black body per unit area. Named after Austrian physicist Josef Stefan, this law states that the power radiated is directly proportional to the fourth power of the black body's absolute temperature. Expressed mathematically as P = σAT^4, where P is the power emitted, σ is the Stefan-Boltzmann constant, A is the surface area, and T is the absolute temperature, Stefan's Law has wide-ranging applications in astrophysics, engineering, and climate science, offering insights into energy transfer mechanisms in various systems.

Questions

- What is Stefan Boltzmann law?
- What is the wavelength at which the human body emits the most radiation?
- Is Stefan Boltzmann law related to global warming?
- The surface temperature of Arcturus is about half as hot as the Sun’s, but Arcturus is about 100 times more luminous than the Sun. What is its radius, compared to the Sun’s?
- What is Hawking radiation and its relationship to the Stefan's Law?
- A star with the same color as the Sun is found to produces a luminosity 81 times larger. What is its radius compared to the Sun?
- What is Stefan Boltzmann law used for?
- How did Stefan Boltzmann find the constant to the Stefan Boltzmann law?
- What is the constant of proportionality?
- A star is five times as luminous as the Sun and has a surface temperature of 98,000 K. What is its radius, compared to that of the Sun?
- How are Stefan's law and Newton's law of cooling related?
- What is the total intensity of the sun?
- What is the Stefan Boltzmann constant?
- How much energy does a person with an emissivity of 0.85 and a surface area of #"1.42 m"^2# lose per minute when the external temperature is 20 °C?
- What is the emissive power?
- How do Wien's law and the Stefan-Boltzmann law describe blackbody radiation?
- If a star’s surface temperature is 30,000 K, how much power does a square meter of its surface radiate?
- What are some common mistakes students make with Stefan's Law?
- Why is Stefan's Law important?
- How can I calculate the temperature of the Sun?