Ole Christensen was born in Arthus, Denmark back in 1644 to Christen and Anna. Few records exist of him prior to 1662 when he graduated from the Cathedral school of Aahus. He moved to Copenhagen where he attended the University of Copenhagen.
After graduation, he was employed by the French government under the rule of Louis XIV. In 1681, he returned to Denmark where you would find him as a professor of astronomy at the University of Copenhagen. In 1683, he introduced the first national system for weights and measures.
Are you ready, try to keep up because here we go. Ole Christensen Romer developed the first temperature scales around 1708. He invented the first street lights (oil lamps) he also made the first quantitative measurement of the speed of light. In 1700, he persuaded the king to introduce the Gregorian calendar to Norway. In 1705, he was appointed the second chief of the Copenhagen Police, his first act was to fire the entire force and replace them with people he considered to have a higher morale attitude. He held that position until his death in 1710. Until tomorrow smile, pass it on, and remember to have a laugh or tow during the day, even if you laugh at yourself