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Vphysics2013
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Hi
Is the light from other stars has the same electromagnetic spectrum ?
Is the light from other stars has the same electromagnetic spectrum ?
No, stars emit a black-body spectrum according to Planck's law, which is temperature dependent. Even then, two stars that are the same temperature can have different absorption and emission lines depending upon the composition as Doug mentioned below.Vphysics2013 said:Hi
Is the light from other stars has the same electromagnetic spectrum ?
Same as what other star? Star light exhibits absorption and emission lines in its continuous spectrum. See Fraunhofer.Vphysics2013 said:Hi Is the light from other stars has the same electromagnetic spectrum ?
Stars are primarily made of hydrogen and helium gas. These elements are fused together through nuclear reactions to create other elements, such as carbon and oxygen. The exact composition of a star depends on its mass and stage of life.
Stars produce light and heat through nuclear fusion. In the core of a star, hydrogen atoms fuse to form helium, releasing a tremendous amount of energy. This energy is emitted in the form of electromagnetic radiation, including visible light and heat.
The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation, which includes visible light, radio waves, microwaves, infrared radiation, ultraviolet radiation, X-rays, and gamma rays. Each type of radiation has a different wavelength and energy level.
We can study stars using the electromagnetic spectrum by observing the different wavelengths of radiation they emit. Different elements and temperatures produce unique patterns of electromagnetic radiation, allowing us to determine a star's composition, temperature, and other properties.
Stars appear to have different colors because of their temperature. Cooler stars, such as red dwarfs, emit more red and infrared radiation, giving them a red or orange appearance. Hotter stars, such as blue giants, emit more blue and ultraviolet radiation, giving them a blue or white appearance.