What is an invention?
A new creation.
A plagiarism.
Who created the first long-lasting light bulb?
Thomas Edison
Thomas Watson
Alexander Graham Bell
Galileo Galilei
Who invented a computer?
Hans Lippershey
Charles Babbage
Thomas Watson
Cai Lun
Who invented the first telescope?
Galileo Galilei
Neil Armstrong
Hans Lippershey
Alexander Graham Bell
Who was the first to aim a telescope to the sky?
Charles Babbage
Hans Lippershey
Wright Brothers
Galileo Galilei
Who invented papers?
Charles Babbage
Cai Lun
Who invented the first engine-powered glider?
Hans Lippershey
Montgolfier Brothers
Wright Brothers
Abbas Ibn Firnas
Why did Wright Brothers build their own engine?
The engine was too expensive.
There was no such powerful engine available.
What gas that lifts up an airship to the sky?
Hydrogen
Oxygen
Helium
Krypton
What is the object that casts a shadow on the dial of a sundial?
gnomon
dial
A sundial/shadow clock can be useful in
cloudy days
sunny days
stormy days
rainy days
What is NOT a timekeeping device back in the older days?
sundial/shadow clock
water clock
candle clock
smartwatch
Who discovered the law of pendulum?
Thomas Watson
Galileo Galilei
Charles Babbage
Montgolfier Brothers
