He used the minimum and maximum distance from Earth to Jupiter’s moon. These distances differed by an amount equal to the diameter of the earth’s orbit. When the Earth was at the shortest distance from Jupiter, the satellite left 22 minutes earlier than when the Earth was at its maximum distance. By dividing the diameter of the earth’s orbit by the time difference, Römber calculated the speed of light.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.