Read and complete. invented wax astronomers Candles are made of wax. the light bulb was by Edison. le can use a watch the film on the wall. cooks food quickly. projector to microwave is a machine that send discovered 5 I use a digital 6 It's faster to 8 thermometer to check my temperature. 7 Gravity was messages to communicate. by Isaac Newton. the planets. text use telescopes to study​