D O C U M E N T 1 4 8 N O V E M B E R 1 9 2 3 1 4 3

If, therefore, the quantum flies back into the original direction, it has regained

its original frequency, and the velocity of both participating atoms is simply ex-

changed between them.

Hence, not the slightest redshift can occur in the original direction of observa-

tion, either.[10]

Neither do I see any possibility for an effect of higher order. If it were present,

it would not play any role because the change in frequency as a result of the term

is very small already, e.g., for Hg Δν upon reflection:

or

[11]

thus . Even here, if the redshift were zero, one therefore ought to

have

104

individual processes to make the shift equal to the Doppler width, which

amounts to ≈

10–3

Å; therefore, an effect of higher order, if it were present, would

escape observation. In the hope that you will grant me my argument, I am, in ut-

most respect, very sincerely yours,

W. Orthmann.

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

mε2

Δν

2mε2

h

------------ - 2---------

hν0 2

c2m

= =

Δν

ν

------ -

Δλ

λ

------ - 2---------

hν0

c2m

2h

λ0 c m ⋅ ⋅

--------------------- = = =

Δλ

λ

------ -

2 6,55

10–27

6,06

1023

⋅ ⋅ ⋅ ⋅

2,54 10–5 3 1010 200 ⋅ ⋅ ⋅ ⋅

----------------------------------------------------------------- 5 10–11 ⋅∼ =

Δλ 1,3 10–7 ⋅∼