Bothe, Walther

SKU: 6021925

Price:
Sale price$480.79 Regular price$599.58

Description

Typed letter signed, one page, 8,75 x 11,25 inch, `Reg.-Rat Dr. Walther Bothe` letterhead, Charlottenburg, 4.09.1928, in German, to Mr. Lorenz - concerning the coefficient of expansion of the glass sample of his correspondent and the procurement of emanation tubes for the extraction of radium, signed in dark ink "W. Bothe", with intersecting mailing folds and very mild signs of wear - in fine to very fine condition.

In parts:
"Der mittlere Ausdehnungskoeffizient Ihrer Glasprobe zwischen 0 und 100° beträgt 0.10(-6). Die Proben schicke ich Ihnen gleichzeitig zurück. Entschuldigen Sie bitte, dass es etwas gedauert hat, das betreffende Laboratorium ist augenblicklich mit Prüfungsanträgen stark belastet, man hat mich von einem Tag zum anderen vertröstet.
Die Radium Belge hat erklärt, nicht in der Lage zu sein, mir Radioblei zu liefern. Daher möchte ich auf Ihr freundliches Anerbieten zurückkommen und Sie bitten zu versuchen, mir drüben alte Emanationsröhrchen zu beschaffen, möglichst in einer Menge, dass ich nach den unvermeidlichsten Verlusten etwa 15 - 20 mg Radium - Aequivalent an RaD daraus erhalte. Dies würde einem ursprünglichen Emanationsgehalt von etwa 50 Curie entsprechen, die von einem Gramm Ra-Element in 10 Monaten entwickelt werden. Damit würden wir einen Faktor 10 gegen früher gewinnen und es würde sich lohnen, die Zertrümmerungsversuche wieder aufzunehmen. (Natürlich würden auch noch stärkere Präparate uns sehr willkommen sein, aber ich glaube, dass ich schon anspruchsvoll genug bin)..."

Translated:
"The mean coefficient of expansion of your glass sample between 0 and 100 ° is 0.10(-6). At the same time, I will send you back the samples. Please excuse that it took some time, the laboratory in question is currently heavily burdened with exam applications, they have put me off from day to day.
The Radium Belge has stated that it will not be able to supply me with `Radioblei`. Therefore I would like to come back to your friendly offer and ask you to try to get old emanation tubes for me over, if possible in such a quantity that after the most unavoidable losses I get about 15 - 20 mg of radium - equivalent to RaD from it. This would correspond to an initial emanation content of about 50 Curie developed by one gram Ra element in 10 months. This would give us a factor of 10 against earlier and it would be worthwhile to resume the `Zertrümmerungsversuche` (= special experiments). (Of course even stronger preparations would be very welcome to us, but I think I'm already demanding enough) ..."

Further Information on the person

Profession:
(1891 - 1957) German nuclear physicist, who shared the Nobel Prize in Physics in 1954 with Max Born

Year of Birth: 1891

Biography (AI generated)

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