Time distribution + roller electric clock
Description
Time distribution and the role of the electric clock in it
In the course of the 19th century, the need for unification of time increased with the development of telegraphy and railways, among other things. With the emergence of usable electricity and the invention of the electromagnet, the electric clock came into being and time distribution became possible on a large scale. Also in the 20th century, thanks to electricity, the precision of clocks could be increased to unimaginable levels. Mention should be made of the Shortt-Synchronome clock, the invention of the quartz clock by Marrison and the atomic clock. Moreover, today's precision time is now available to everyone virtually free of charge
10.30 h Reception with coffee
11.00 h Lecture by Drs J.J.H. Vrolijk
11.45 h Break
12.15 h Continuation of the lecture with concluding discussion
12.45 h End of meeting
REUNIE CORNWALL-REIS
Following the lecture, the reunion for the participants of the trip to Cornwall (last May.) will take place.
Because of last year's good experience with the Tapas lunch, the Spanish-Portuguese restaurant Casa del Sol, Dasstraat 24, 2623 CC Delft (Tanthof Oost) is again exclusively reserved for us. Start 13.30, end 15.30/16.00.
For trip participants, the cost of lunch is included in the (already paid) trip price. For others, such as partners who would like to join us, the cost is € 30 (incl. drink and coffee).
For anyone wishing to join us for lunch (including Cornwall-goers): please register, preferably by e-mail, at: Ton Boele, tboele@box.nl, 010-4518280 / 06-51 62 54 96.
Speaker(s)
Hans Vrolijk (1949) obtained his gymnasium STEM diploma at the Stanislascollege in Delft, after which he studied medicine in Rotterdam. After having completed his military service, he established a multicoloured practice in Rotterdam West as a general practitioner in 1978. He also served on the boards of the Kruisvereniging, Local GP Association and Riagg. He retired in 2010.
Since the mid-1990s, he has been collecting, repairing and studying electric clocks. He has published several articles on the history of these clocks and their makers. A selection from his collection can be found via the link below
Location
Science Centre, Mijnbouwstraat 120,
2628 RX Delft
Organiser
History of Technology
Histechnica
Name and contact details for information
Further information from L.A. Hissink at the e-mail address below.