a man demonstrating how to construct a potato battery
a man hooks some wires up to apple slices
a man in an army uniform doing a science experiment
a man in uniform is doing an experiment with electricity involving apples and wires
a man is creating electric with apple
a man is experimenting with apples
a man pin and clip in apple for some experiments
a man showing that apple can transmit electricity
a man uses wires and apple slices to conduct electricity
a person is connecting wires to apple
a person is explaining something
a person making an item with apples
a person wiring together apple slices
an apple is producing current
man performs science experiment
man playing with electrical wires
person doing a science project
someone is showing some art
the man connecting wires to an apple
a man showing that apple can transmit electricity