Why do stars twinkle diagram

Since the atmosphere bends star light towards the normal, the apparent position of the star is slightly different from the actual position. This apparent position of the star is not stationary, but keeps on changing slightly as the physical conditions of the earth's atmosphere are not stationary.

Since the stars are very distant, they act as point-sized sources of light As the path of rays of light coming from the star goes on varying slightly, the apparent position of the star fluctuates and the amount of light entering the eye flickers-- the star sometimes appears brighter and at other times appears fainter, which is the twinkling effect.

Home Question Answer Explain with help of a labelled diagram, the cause of twinkling of stars Explain with help of a labelled diagram, the cause of twinkling of stars.

Best Answer Ans. Related questions Compare and contrast the arrangement of elements in Mendeleev periodic table and the Modem periodic table. In the modem periodic table, calcium atomic number 20 is surrounded by elements with atomic. How does the electronic configuration of an element relate to its position in the modem periodic table. Nitrogen atomic number 7 and phosphorus atomic number 15 belong to group 15 of the periodic table.

The positions of three elements A, B and C in the periodic table are shown below:. When white light is passed through a glass prism it splits into its spectrum of colours in order violet, indigo, blue, green, yellow, orange and red and this process of white light splitting into its constituent colours is termed as dispersion.

The amount of change in speed of light in a medium depend upon the property of medium refractive index Refractive index is a measure of how much speed of light changes when it enter the medium from air.

Absolute refractive index is the ratio of speed of light in vacuum or air to speed of light in the medium. The Tyndall effect is the phenomenon in which the particles in a colloid scatter the beams of light that are directed at them.

This effect is exhibited by all colloidal solutions and some very fine suspensions. Therefore, it can be used to verify if a given solution is a colloid. Each beam of light, with its own particular wavelength or color , is slowed differently by the glass. Since violet light has a shorter wavelength, it is slowed more than the longer wavelengths of red light. Consequently, violet light is bent the most while red light is bent the least.

Red color has the maximum wavelength and amount of scattering is inversely proportional to the wavelength. Therefore the Red light scatters the least. Teaching Job at Trustudies. Stars twinkle due to atmospheric refraction of starlight. Refraction occurs and refractive index changes. As the path of rays of light coming from the star goes on varying slightly, the apparent position of the star fluctuates and the amount of starlight entering the eye flickers.

Therefore sometimes star appears brighter and sometimes twinkle. Trustudies menu. Why do stars twinkle?