Question

Name the invertors of these things which are
ngs which are so commonly used:-
1. Printing press, 1455
2. Electric bulb, 1879
3. Clock (pendulum), 1656
4. Steam engine, 1698​

Answer 1

Answer:

1. Johannes Gutenberg

2. Thomas Alwa Edison

3. Christiaan Huygens

4. James Watt