Historical Photographs
|
|
|
|
All comments with the photographs are from the book on Willem Einthoven by
prof. Herman Snellen. Figure numbers refer to the numbers of the figures in
the book.
|
|
>> hires versions of
these photo's |
|
|
|
Figure 2. Front of the Physiological Laboratory Leiden (around 1920)
with added annex for electrical insatllation at the right. |
|
|
|
|
Figure 4. Illustration composed from and comparing three
subsequent episodes of electrocardiographical development.
1) Upper part: Waller 1887. t=time, h=external pulsation from heartbeat
usually called cardiogram (after Marey), e=electrical heart action,
showing 2 peaks directed downwards. The cardiac action current is rather
inconspicious and was later often confused with the cardiogram above it.
2) Einthoven's tracing as published in 1902, also with Lippmans
electrometer. Four peaks (ABCD) directed upwards because of reversed
connection. Timescale in 0.1 sec above tracing. Below that, the same
tracing corrected mathematically. Timescale in 0.1 sec is stretched (S);
the four peaks in the corrected tracing are now called PQRST.
3) One of the first electrocardiograms with the string galvanometer as
published in 1902 and 1903. |
|
|
|
|
Figure 7. Finished string galvanometer. The long sides of
the magnet are covered together by the windings of the tube for water
cooling. |
|
|
|
|
Figure 8. Patient sitting in the University Hospital while his
telecardiogram is being taken in the physiological laboratory. The hands
are immersed in strong salt (NaCl) solution. |
|
|
|
|
Figure 10. Willem Einthoven when rector of the senate of the University
in 1906. |
|
|
|
 |
Figure 12. Einthoven's co-workers and guests from abroad in
the early 1920's. |
|
|
|
|
Figure 13. The Einthoven's in 1924. Standing behind them Mrs.
Eitnhoven's sister, Mrs de Voogd, who joined them on their journey to
America. For the two ladies this was mainly an independent trip. Einthoven
was here in his happy old age. |
|
|
|
|
Figure 15. One of the last pictures of Einthoven. His signature can be
seen against the background of the dark chair. |
|
|
|
|
Figure 16. Grave of Willem Einthoven, his wife and his son; on
both sides of it the graves of Mrs Einthoven's relatives.
At the back the Green Church in Oegstgeest. It was built on the site of a
wooden chapel reputed to have been consecrated by St. Willibrord in the
8th century. In the 11th century the (tuff stone) church was built,
subsequently destroyed in the war againts Spain and rebuilt in the 17th
century on the old foundations. |
|
|
|
 |
Figure 18. Scientific co-workers in Einthoven's laboratory
during World War I (probably 1916 or 1917).
Standing from left to right: W.F. Einthoven (son), Hugenholtz (later
general physician near Leiden), Waar (later general physician at the
Hague), Flohil, Bijtel. Sitting: W.Einthoven (left) and Bergansius
(physicist). |
|
|
>> hires versions of
these photo's |
