1. The light bulb was invented by Thomas Edison in the United States and Joseph Swan in Great Britain in 1879. The light bulb allowed homes and cities to have electric lights. It made longer work hours possible, and a safer nighttime home environment, because candles and oil-based lamps were dangerous fire hazards.
5. The first commercially successful internal combustion engine was created by Étienne Lenoir around 1859. The development of the Internal-combustion engine, fired by oil and gasoline, provided a new source of power in transportation. This engine gave rise to ocean liners with oil-fired engines, as well as to the airplane and the automobile.
9. The Chinese inventedthe the first compass sometime between the 9th and 11th centuries. Before the compass was invented, travel by ships over long distances was not possible, because sailors had to navigate using the stars. The compass provided explorers with a reliable method for exploring the world’s oceans, and started the Age of Discovery.
10. Electronic computers were invented in the 20th century. There is no single inventor of the modern computer, but the ideas of British mathematician Alan Turing influenced the field of computing. Computers are able to make complicated mathematical calculations at an incredible speed, and let us store large amounts of information and retrieve a given piece of it almost instantly.