Use Of Light In Astronomy Quiz

Ultraviolet light is absorbed by the Earth's atmosphere, making ground-based observations challenging.

Luminosity refers to the total amount of energy produced by different celestial bodies(stars, galaxy) per unit time and it is basically measured in joules per second or watts in SI units.

Infrared light is used to see through cold dust; study warm gas and dust, and relatively cool stars; and detect molecules in the atmospheres of planets and stars.

Diffraction of light waves produces both constructive and destructive interference. Diffracted light incident on a screen perpendicular to gaps that diffract the light produces a pattern of bright and dark fringes.

Rayleigh scattering of sunlight in Earth's atmosphere causes diffuse sky radiation, which is the reason for the blue color of the daytime and twilight sky, as well as the yellowish to reddish hue of the low Sun.

Blueshift is the term for the change in color of an object due to its motion relative to an observer.

Diffraction, which is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle, is another significant property of microstructures.