If a star has a surface temperature of 20,000 K, at what wavelength will it radiate the most energy?

Question

If a star has a surface temperature of 20,000 K, at what wavelength will it radiate the most energy? __________nm

Answer 1

Wein's Law is an observation that the peak wavelength emitted by a blackbody is inversly related to absolute temperature; that is,

L = b / T

where L is the wavelength (usually expressed using the Greek letter lambda) in nanometers, T is the temperature in Kelvins, and b is Wein's Constant 2.98 x 10^6 nm-K. Wein's Law seems to work pretty well for stars as well.

So plug in the value of b given above, the temperature 20,000 K and solve for L; the result will be in nm. You should get something well into the ultraviolet.

Answer 2

depending on the sheer type of stars you're waiting to locate interior the sky once you're out interior the country with out gentle pollution round i might want to say positive there are extraterrestrial beings. it would want to be arrogant (and prevalent) of the human race to imagine of that of each and each and every of the celebrities interior the universe that fill our sky really our little earth is in a position to preserving life. previous that who's to declare that our definition of life is extremely the and who says that a planet might want to favor to be like earth for life to exist. Fish stay lower than water, human beings can't (for sure), does no longer propose that using very reality the situations at the prompt are not perfect for us that life can't exist there. really using very reality we received't live to inform the tale a planet with out surroundings or a severe radiation count number kind does no longer propose that yet another type of life might want to no longer.