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