3 2 6 D O C U M E N T 2 2 2 D E C E M B E R 1 9 2 0
Debye, like Born, should write a book, for himself and others, a fabulous lucid
mind with simple
I’ve been reading Born’s book these past 2 days
The Divine Comedy Einstein, where it also says every time at the end of
the song: e amor e le altre stellae [“love, which moves the sun and the other
In the next edition he should be a little more detailed, spec[ifically], you
really ought to comment a bit more on the development of the ideas on [pp.] 34ff.,
54f., 92f., 118ff., and on the end yourself, in the way you made many things clear
to me: But [it is] surely the most comprehensible book—despite

much, much better, more contained, more logical than his “Structure of Matter,”
which was too hastily
Whereas Sommerfeld is somewhat difficult to
because he retains the authors’ nomenclature—thus leaving one to labor
(on one’s own even ), and the requisite compilation for self-ordering [via proofs]
becomes tiresome.
By the way: I don’t understand: how for the nucleus of H, 1/2000 of the electron
should be = 1/2,000,000 of H. The cohesion would be the energy-mass.
Where is this leading to?
We want to try to have industry contribute a fund so that we can invite Ruther-
ford, Aston, etc., to Zurich to give lectures,[12] because this train of thought is more
difficult for me to access and yet quite suggestive (as earlier Kelvin and Faraday
helped me very much).[13] Langevin is also coming.[14] You too? You old Swiss.
Besides that, I’m in the middle of the boundary surface conditions; I’m hoping
that my first love, the membranes, their structure acquire new life (despite stress
and tiredness).[15] The papers by Kossel—who is going to come to Zurich as well—
are also valuable to me as a hint, but not yet thought through enough for my
You see, I am full of lively physics hopes and delivered a talk on spectra and
With best regards,
electron ( = 1 cm - distance 1st nucleus)
H 1.6 10
elect. 10
nucleus 10
1 2000 10
Rutherford curve
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