image from Explore kinetic energy of solid, liquid and gas
Explore kinetic energy of solid, liquid and gas

image from Splitting water
Splitting water

image from The first battery
The first battery

image from Oersted connects the dots
Oersted connects the dots

image from What is surface tension?
What is surface tension?

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Why does thunder, thunder?

image from What is an atom?
What is an atom?

image from What is light?
What is light?