Galileo was the first scientist to do which of the following?

Explanation:

According to a different source, these are the options that come with this question:

Galileo Galilei was the first person to attempt to measure speed, specifically the speed of light. He attempted to do this in the 1600s, with the help of an assistant. Galileo tried to measure how quickly light would travel from one hilltop to another one. However, light was so fast that it was impossible to measure it in this way.

small = small current large mag large current

compass can be used day and night, cloudy or sunny