Isaac Newton's apple tree

Back in year 1666 Isaac Newton had to return to his family home from Cambridge University. The University had been closed due to the Great Plague of London which had killed estimated 100,000 people. In Woolsthorpe Manor, which was also his birthplace, Sir Isaac Newton performed multiple experiments with light and optics. He also relaxed in the garden, where he observed a falling apple, and started wondering why everything fell

Server room

You know how smartphones sometimes get really warm after an hour of web browsing, right? And how laptop’s fan is howling on a warm day, spouting hot air from the vents. In a powerful gaming PC heat is an issue. Computers produce heat, but can a computer heat up a room? A Reddit user did some serious maths