Final answer:
NADIR itself does not have any displacement or distortion, as it is a concept used to determine the location of celestial objects in the sky. However, the observation of celestial objects from Earth can be affected by various distortions caused by atmospheric seeing.
Step-by-step explanation:
In the context of Physics, NADIR refers to the point directly opposite to the zenith, which is the lowest point in the sky directly below an observer. NADIR itself does not have any displacement or distortion, as it is a concept used to determine the location of celestial objects in the sky.
However, in the field of astronomy, the observation of celestial objects from Earth can be affected by various distortions caused by our atmosphere. These distortions are known as atmospheric seeing, and they can result in the displacement or distortion of the images of celestial objects seen through telescopes. Atmospheric seeing can be caused by factors such as turbulence, temperature gradients, and atmospheric pressure changes.
To compensate for atmospheric distortions, modern telescopes often use technologies such as adaptive optics and active optics to correct the images in real-time.