```      Jane moves at v = -0.3c relative to Fred.

general                in this case
-----------------       -------------------
Lorentz transforms:    x'  =  gamma * (x - v t)   =  gamma*(x + 0.3 t)

vx
t'  =  gamma * (t - ----)  =  gamma*(t + 0.3 x)
c^2

Event                        Fred                       Jane
------------------------------------------------------------------------
t=           x=           t'=        x'=

1.  Line of men
starting at x=0,
1 m apart,
raise hand at
t = 0

man at x=0             0          0

man at x=4             0          4

man at x=8             0          8

man at x=12            0          12

2. Man at x=0 has cold.     0          0

At t = 5, coughs.       5          0

At t = 10, sneezes      10         0

3. Doggie runs across
field at speed 0.2c
to left.  At t=0,
doggie at x=8.           0          8

Dog barks at t=5         5          7

Dog barks at t=10        10         6

4. Bird flies to right
at 0.9c.  At time t=0,
bird at x=-3.            0          -3

Bird chips at t=0.

Bird meets Dog           10         6

5. Man with cold flashes
laser to right at t=8.   8          0

It strikes flower
3 seconds later.         11         3

```