My paper on the above subject: http://vixra.org/pdf/1806.0027v4.pdf

All my papers are at this link: http://vixra.org/author/edward_g_lake

This YouTube.com link has an interesting demonstration of a police radar:

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

A paper at this link analyzes that video: http://www.ed-lake.com/radar-gun-video.pdf

The main question the video does not answer is:

When the gun is stationary and is pointed at a moving target, it displays the speed of

the target (67 mph) in the "Target Speed" display on the left side:

When the gun is moving and is pointed straight ahead, it displays the speed of

the radar gun (31 mph) in the "Patrol Speed" display on the right side:

My research indicates that the gun is NOT measuring the speed of the ground. It is measuring its OWN speed.

It does that by bouncing photons off of the radome that covers the front of the gun. The radome evidently

contains a few metallic particles that reflect a very small portion of the total number of photons emitted by the gun.

from the target. It can do so by the fact that the radome photons return first,

the radome photons are always of the same quantity.

That clarifies the exact meaning of Einstein's Second Postulate:

See my paper on"Light is always propagated in empty space with a definite velocity c

which isindependent of the state of motion of the emitting body."

https://www.grc.nasa.gov/WWW/k-12/Numbers/Math/Mathematical_Thinking/how_do_police_radars.htm

Here is a copy of that page:

## How Do Police Radars Really Work?
Since the photon energy, E, is equal to hn,
where h = Planck's constant = 6.63 X 10 Also, since photon momentum equals h/c, where c is the speed of light, then where the first term on the RHS represents p for an elastic reflection (i.e., one for which E = 0), and the second term takes into account the change in frequency due to the change in energy. Dividing eq. 1 by eq. 2, and substituting for E and p from eqs. 3 and 4, we find
This equation may be simplified to read
where the final step results from V << c.
Now, let V = 60 mph = 27 m/sec, and let = 5 X 10
The police radar detector easily detects this frequency shift. |
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Another NASA web page at this link https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum2.html says,

Microwaves

RETURN

(c) 2019 by Ed Lake