Lesson 1: Relativity  What
is it?
 Fermilab's Time
Dilation Challenge.
 The
Basics of Relativity
(6 seconds)
 The Relativity Game 
Challenge what you know!
Note: For Fermilab's Time
Dilation Challenge and The Relativity Game, you need
Shockwave. You may painlessly Download
Shockwave here if you do not have it.
Lesson 2: Time
Dilation
 The
equation.
 Where
does that come from?
 I still don't get it! Give
me the basketball analogy.
 So what? There's an
equation. How
do I use the equation in the game?
 Practice
Problems.
 Examples
to aid your practice.
Lesson 3 : Relativistic
Mass
 The
equation.
 Where
does that come from?
 I still don't get it!
Give
me the space pool analogy.
 So what? There's an
equation. How
do I use the equation in the game?
 Practice
Problems.
 Examples
to aid your practice.
Lesson 4 : Length
Contraction
 The
equation.
 Where
does that come from?
 I still don't get it!
Give
me the pole and the barn analogy.
 So what? There's an
equation. How
do I use the equation in the game?
 Practice
Problems.
 Examples
to aid your practice.

Give me the basketball
analogy.
Immagine that I gave you a
basketball and asked you to dribble it straght down and
up with enough speed to cover the distance in two
seconds. We would hear the basketball hit the ground one
time every two second.
This is very similar to the
light
clock with a light pulse
going down and then up in a stationary clock. Also
remember that as an observer moving along with the light
clock, you would see it go straight down and straight up
as if you were at rest.
Now I'm going to ask a second
dribbler to dribble a basketball next to you. I'm going
to ask her to dribble at an angle instead of dribbling
straight up and down. I'm going to ask her to dribble to
the same height in the same amount of time.
Question:
 As compared to your ball,
her ball will cover (more, less than, or the same)
distance as her ball goes side to side and up and
down.
Question:
 To accomplish this different
distance in the same amount of time, she would have to
dribble (faster, slower, the same) than
you.
Play
the Basketball Challenge.
Making the analogy with the
light
clock, the light pulse
as seen by the mover for the mover would travel straight
down and straight up.
The light clock as seen by the
stationary frame for the mover would travel a longer
distance as it traveled down and to the right, followed
by up and to the right.
Question:
 Since light can't travel
faster at an angle than it does straight down and
straight up, the light as seen by the stationary frame
must take (more time, less time, or the same time) to
go down and up. Check Einstein's
2nd
postulates.
Question:
 Another way of saying that
is to say that as a stationary frame views one tick of
the moving clock (measured as one second by the mover
for the mover) as (more than one second, less than one
second, or equal to one second) in the stationary
frame of reference.
Lesson 2: Time
Dilation
 The
equation.
 Where
does that come from?
 I still don't get it! Give
me the basketball analogy.
 So what? There's an
equation. How
do I use the equation in the game?
 Practice
Problems.
 Examples
to aid your practice.
