Albert Einstein (1879-1955)

Lot 345
15.12.2023 11:00UTC +00:00
Classic
Starting price
£ 100
AuctioneerCHRISTIE'S
Event locationUnited Kingdom, London
Buyer Premiumsee on Website%
Archive
The auction is completed. No bids can be placed anymore.
Archive
ID 1109147
Lot 345 | Albert Einstein (1879-1955)
Estimate value
£ 8 000 – 12 000
Albert Einstein (1879-1955)
Autograph letter signed (with initials, 'A.E.') to Cornelius Lanczos, n.p., 24 February 1955
In German. One page, 281 x 217mm, in blue and black ink, including three scientific equations. Provenance: Sotheby's, 26 November 1980, lot 170.

'You should start from rigorous equations and only subsequently approximate the resulting equations': less than two months before his death, Einstein writes a critique of his old friend's latest paper. Einstein apologises for reading Lanczos's paper rather superficially, but nevertheless sends some observations. 'It seems somewhat dangerous to me to assume an approximate Lagrangian'. He provides a set of equations defining a symmetrical field, and points out that the first two parts are of the first order, but the last two of the second order. 'So you might think that you could limit yourself to the first two by approximating gik with ηik. But if one sets the equivalent expression resulting from partial integration [he sets out the equation] then all terms are of the second order (which is more sensible). / That is why I think you should start from rigorous equations and only subsequently approximate the resulting equations. This way you are sure not to make any mistakes'. Further on, Einstein expresses doubt as to which set of field equations Lanczos is using as a starting point: 'If you set Tik as 0 from the start, then it is very risky to assume freedom from singularity even within the areas of strong fields'. He goes on with several more critical notes, but again makes a disclaimer that his reading has been only superficial, as he is overburdened with scientific and other writings, 'And my 76 years are not made of cardboard either'. In a postscript, he adds some brief, but detailed, comments on Lanczos's The Variational Principles of Mechanics, published in 1949 and dedicated to Einstein, but which he has evidently only just read.
Address of auction CHRISTIE'S
8 King Street, St. James's
SW1Y 6QT London
United Kingdom
Preview
09.12.2023 12:00 – 17:00
10.12.2023 12:00 – 17:00
11.12.2023 09:00 – 20:00
12.12.2023 09:00 – 17:00
13.12.2023 09:00 – 17:00
Phone +44 (0)20 7839 9060
Email
Buyer Premium see on Website
Conditions of purchaseConditions of purchase

More from Creator

A signed photograph
A signed photograph
$100
"Demostracion de la no existencia de campos gravitacionales sin singularidades de masa total no nula"
$5 500
An endorsed check to the United Jewish Appeal
An endorsed check to the United Jewish Appeal
$100
Albert Einstein (1879-1955)
Albert Einstein (1879-1955)
£18 000
Albert Einstein (1879-1955)
Albert Einstein (1879-1955)
£8 000
Albert Einstein (1879-1955)
Albert Einstein (1879-1955)
£7 000
Albert Einstein (1879-1955)
Albert Einstein (1879-1955)
£40 000
EINSTEIN, Albert (1879-1955)
EINSTEIN, Albert (1879-1955)
£70 000

Related terms