D O C U M E N T 2 3 9 S E P T E M B E R 1 9 2 1 1 5 9
unfortunately a frequency dependency of the effect appears.
Under these conditions it is questionable whether the whole
method is worthwhile. But I do believe that it ought to be tried.
It is shameful that I made this mistake, but you must forgive
me.
Please also tell Messrs. Schuler and Glitscher about the geo-
magnetic experiment, so that it’s not forgotten (short-circuited
coil instead of massive
disk).[3]
The splendid days in Kiel still often pleasantly run through my mind. Until we
happily meet again in Munich at the beginning of November. With cordial regards
to you and your wife, yours,
A. Einstein.
P.S. It will not be easy to accommodate an adequately large capacitor!
238. From Arthur Holitscher
Berlin v. 15, 12 Ludwigskirch Place, 17 September 1921
[Not selected for translation.]
239. To Hermann Anschütz-Kaempfe
[Berlin,] 18 September 1921
Dear Mr. Anschütz,
Further thought leads me away from the double windings altogether again. If
three slip rings are
permissible[1]
and you are not disinclined to using condensers
outside the liquid, the following connection might be useful:
S
S
S
ring windings
S = slip rings