how does this approach apply to measure the diameter of other planets?
The first recorded calculation of the Earth's diameter was done by the Greek mathematician Eratosthenes in the 3rd century BC. He used the angle of the sun's rays at two different locations on the same day to estimate the circumference and diameter of the Earth.
The current accepted value for the diameter of Earth is approximately 12,742 kilometers (7,917.5 miles). This was determined through modern techniques such as satellite measurements and advanced geodetic surveys.
Scientists use a variety of techniques to measure the diameter of Earth, including satellite measurements, precise ground-based surveys, and mathematical calculations based on the Earth's curvature. These methods take into account the Earth's shape, rotation, and gravitational pull.
The measurements of the Earth's diameter are very accurate, with a margin of error of only a few kilometers. This is due to the use of advanced technology and precise calculations. However, as the Earth's diameter is not a perfect circle and varies slightly at different points, there may be slight variations in the measurements.
Knowing the diameter of Earth is important for a variety of reasons. It allows us to understand the Earth's size and shape, which has implications for various scientific fields such as geology, geography, and astronomy. It also helps us to accurately map the Earth's surface and understand its relationship to other objects in the universe.