Ce sont les mots les plus souvent utilisés dans ce livre.
air
although
atoms
ball
beam
between
body
called
car
case
change
charge
constant
current
different
direction
distance
does
due
earth
einstein
electric
electron
energy
equal
example
experiment
field
figure
first
force
form
frequency
gas
heat
however
increase
known
large
law
length
light
lines
liquid
magnetic
mass
mirror
molecules
momentum
motion
move
moving
must
neutrons
new
newton
nucleus
number
object
particle
photons
physicist
physics
place
point
position
potential
pressure
principle
produces
protons
rays
scientists
second
see
since
small
sound
space
speed
state
string
sun
surface
system
take
temperature
theory
thus
time
two
universe
used
value
velocity
water
wavelength
waves
work
years