- Edwin Budding who invented Lawnmover belongs to__________?
- When was helicopter Invented?
- Radio was invented by_____________in 1895?
- The Battery was invented by?
- The World Wide Web was invented by____________?
- Jet Engine was invented by_____________?
- Who invented optical fiber?
- In 1940, first electronic computer was invented by_______?
- The US president who invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel was___________?
- According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in____________?
- When was the game Frisbee invented?
- Who invented the safety pin?