The conversation between human and AI assistant.
When and how did scientists measure the radius of the earth?
Wow, I never knew that. Did scientists come up with any other methods to measure the earth's radius?
Yes, many other methods have been developed over time. For example, in the 18th century, scientists used pendulum measurements to estimate the earth's shape and size. And in the 20th century, satellite data and laser ranging were used to get even more accurate measurements.