Parallaxis
Parallaxis is a term used in astronomy to describe the apparent shift in the position of a star or other celestial object due to the Earth's orbit around the Sun. This phenomenon is a result of the change in the observer's perspective as the Earth moves from one point in its orbit to the opposite point six months later. The amount of shift, or parallax, can be used to calculate the distance to the star.
The concept of parallaxis is based on the principle of trigonometric parallax, which involves measuring the
The first successful measurement of stellar parallax was made by Friedrich Bessel in 1838 for the star
Parallaxis is also used in other fields, such as geodesy and surveying, to measure distances and positions