accelerator

assistant

ball

boys

caucasian

charge

child

children

discovery

education

electric

electricity

electromagnetic

electron

electrostatic

energy

entertainment

experiment

generator

globe

graaff

group

high

kid

laboratory

looking

machine

magnetism

male

man

metal

museum

people

physics

potential

prores

reaction

school

science

scientist

static

study

teacher

technology

van

volt

voltage