Home work for Orac 
bulb -----------300 000 km----------screen
p1
situation A
bulb and screen are moving in space 20 km/s
respect to p1 point
situation B
bulb and screen are not moving in space 0 km/s
respect to p1 point
we have 1 watt bulb
360 degree angle ( 3D ball signal )
Not exist C+20 km/s exist only C
How big intensity will register screen
Please imagine that Bulb started only one wave !!!
*** Star home work
gravitation M...........300 000 km ...........m >>> 20 km/s
p1
How big Intensity of signal will feel mass m
M...........300 000 km ...........m >>> 2000000 km/s
p1
where the signal started ?
where mass will register the signal
VERY OLD LAW GALLILEO
natural fall down law
m.........earth
M
mass M and m will natural fall down at one and the same time
Marosz
m........earth........m >>> motion
How long will natural fall down mass m left and mass m right ?
Mr Mach idea ?
airplane can escape from point where started sound
mass M can escape from point where started gravitation
Why we can not see 70% of the universe but we are sure
that this dark = energy and gravitation ?
