What is atmospheric refraction ? Explain with the help of a labelled diagram that the position of a star as seen by us is not its true position.
Answers
Answer:
Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height. ... Astronomical or celestial refraction causes astronomical objects to appear higher above the horizon than they actually are.
True position of the star is below the horizon. Incident rays from star, travel
through earth's atmosphere and reach observer's eye. These incident rays
travel from rarer atmosphere to denser atmosphere and bend towards normal. Thus, it appears to come from different position, which in this case is on the horizon.
Answer:in atmosphere it cause refraction due to difference densities of gases,particles etc. it causes atmospheric refraction the light Rays travel from star undergoes in refraction
