Light = small m WE CAN USE IT !!!

[tesla2]

please evaluate A-A area for SUN and Earth

A- A = huge distance and surface

http://2.bp.blogspot.com/-XOxE9OYcVys/VP1HK3fFPgI/AAAAAAAACQc/EnJXXu4d2lg/s1600/CIMG3541.JPG 



Why Earth is making rotation respet to own axis  ?

delta V must exist !!!


m --V-->           M



when small m is moving V

and  is hiting big mass M You can hear wave ( sound  )





electron --->     <<< EM WAVE 



when electron is hiting EM wave You can SEE wave not hear wave

( it is not sound but it is very similar mechanism electron is exchanging P=M*V with light )



electron = big M

EM wave = small m  SPEED IS HUGE !!!


HOW I'M SURE ? why very small doth feel parabola ( left side below picture )

http://1.bp.blogspot.com/-HEnn7T9o9cw/VHOZTzOjBBI/AAAAAAAACLg/CoXd_JoyeI4/s1600/22.jpg

[sm0ky2]

All this wondering gives final question. What is speed of exiting electron in FEL lasers in function of speed of ongoing electrons? What is Δv of entry electron compared to exiting electron? From data known on relativistic dopler effect electron doesn't lose speed.
My expectation is that Δv is 0. FEL laser gives monochomatic light. It is possible only if electron don't losse own speed during travel trough undulator!
So to quote wiki -> _{The transverse acceleration of the electrons across this path results in the release of photons (synchrotron radiation), which are monochromatic but still incoherent}

While the decrease in velocity of the electron is small (negligible) it is definitely not 0.
If you take a look inside an atom during photon emission - the electron increase its' orbital radius, then decreases, the energy of the photon being emitted being equal the decrease in electron energy.
E = mv^2,  m being 1 electron mass.
the orbital path (circumference: 2pi *r) is a given distance, divided by the period time (1 / freq) gives you the velocity.
if this distance is decreased, the velocity is lower. Thus by the energy of the photon emitted, we can infer the loss in energy of the electron, and thus compare this to its' ground state orbital distance, determine the decrease in distance traveled over time, and subsequent loss in velocity.

This is in reference to an electron orbiting a nucleus, but also applies to a projectile (free) electron in a similar manner.
the energy of the photon is equal (negating losses) to the energy decrease of the electron that initiated the photonic emission.
So, if you know the initial velocity of the electron (slightly less than c in most cases), then you can calculate and/or measure the change in v.  v = (sqrt) [m / E] This gives us the relationship between the velocity of the electron and the energy of the photon.

[tesla2]

http://physicshelpforum.com/showthread.php?t=11035

[sm0ky2]

http://physicshelpforum.com/showthread.php?t=11035

https://www.youtube.com/watch?v=FgsJrimgPiQ

I can't understand the language, but this seems to demonstrate the laws of pressure equilibrium in a closed vessel.
First throw, there is equal pressure on both pistons, when the primary mass strikes the actuator.
Both masses travel with equal force and velocity.

Later (8:00+/-) one mass is removed, and all the pressure goes into moving the cylinder with no mass on the piston.
the unmassed cart travels far, the mass on the other piston hardly moves at all...

[tesla2]

http://4.bp.blogspot.com/-xs_Pq6LAbDE/VQsdrusV4aI/AAAAAAAACTg/RWNGLIiRZz4/s1600/x1w.jpg


M---------------------------------------Long pipe----------------------------------M
....I
....I (short arm)
....I
....M

more energy will go to shorter arm
energy will be first inside shorter arm



Sprinter A
sprinter B  >>>

start

If  sprinter A started first he need lower enegry to win !!!

http://4.bp.blogspot.com/-xmdO_nivRh4/U3muXoV-6eI/AAAAAAAAB1M/ldGGse-8KuI/s1600/1Lm.jpg


Marosz I found Inverse Cubic Law !!!

joul/cubic meter = N*m /m^3 = N/m^2  ( pascall )

Energy's density inside pipes ?