Gravity
Statical electricity
Centrifugal force
Relativity
Falling apple
Dream
Folk song
Autumn leaves
Galileo Galilei
Isaac Newton
Tycho Brahe
Aristotle
Watt
Ohm
Ampere
Volt
The electric battery
The telegraph
The lightning rod
The light bulb
Benjamin Franklin
Isaac Newton
Thomas Edison
Alexander Graham Bell
Electric pressure
Electric current
Electrical resistance
Electric power
Electrical resistance
Electric current
Electric power
Electric pressure
Gravity
Speed of light
Flash memory
Relativity
Ampere
Ohm
Watt
Volt
Amber
Magnet
Lightning
Wool
Frequency
Sound pressure
Brightness
Temperature
Uncuttable
Very small
Fitting
Stable