Tag Archive | Rupert Hall

Stories from the Archives: How to make and move an equatorium

At the start of this project I was only hoping to find some documentation linked to the equatorium that Derek Price built – so I was amazed when I found the equatorium itself.  It’s now on display in the Whipple Museum for the History of Science (open Monday-Friday, 12.30-4.30; admission free).

But I still haven’t found much of the documentation I was searching for in the first place.  I imagined I’d be able to track down at least a few references to the equatorium in the archives… but I’ve had little luck.  As always, of course, we researchers are dependent on what people thought was worth keeping.  In my case, because both the Cavendish Laboratory and Derek de Solla Price made big moves (to west Cambridge and the USA, respectively) not long after the equatorium was made, very few papers are conserved from that period.

However, I have had a little luck in other archives, and with the help of Derek Price’s family I’ve been able to piece together a few more details about the early life of King Arthur’s Table.

As I explained in a previous post, it was made in the Cavendish Laboratory, which was run at the time by Sir Lawrence Bragg.  Bragg had deliberately structured the Cavendish to create plenty of spare capacity in the workshops, so that experiments would never be delayed for want of a particular piece of equipment.  This helps explain how it was that a History student was able to get a model of a medieval astronomical instrument made by technicians who were more used to working on cutting-edge apparatus for experiments in molecular biology or metal physics.

What I hadn’t realised was how quickly Price got the model made.  He first examined the manuscript in December 1951 and within weeks, it seems, refocused his entire research to place this one document at the centre.  As his diary shows, by March he was ready to make a model of the instrument described in the manuscript.

DJP Cam Diary 1952a

The model – King Arthur’s Table – was certainly complete by May, because that month Price showed it off at a “Conversazione” at the Royal Society in London.  (In fact it’s likely that the opportunity to describe his research at the Royal Society was a significant spur to the model’s production.)

One thing I’d been wondering about this episode is how Price was able to move the model to the Royal Society.  After all, it was stuck in storage for many years precisely because it was too big to fit in a car!  As it turns out, Price had some help.  In the private papers of Rupert Hall, Price’s supervisor and the first curator of the Whipple Museum, I came across a note detailing the travel arrangements for the Conversazione.  As neither Price nor the Museum had the capacity to transport such an item, Hall arranged to borrow the Chemical Laboratory van for the day.  The note instructs Hall to contact “a Mr Thompson” in the Department of Chemistry, in order to make the final arrangements.

In themselves, such diary entries and typewritten notes provide little information.  But they are small pieces of a much larger puzzle; it is through such scattered evidence that we must attempt to construct a coherent narrative.  I’ve realised how unlikely I am to have a “Eureka!” moment in the archives.  Rather, one must be grateful for whatever small titbits on offer, and make the best possible use of them in building better historical understanding.

Coming soon: Next week I’ll be building another equatorium – using brass this time.  Come back soon to read all about it!

Stories from the Archives: Why?

In a previous post I introduced one of the main subjects of my research: the historian of science Derek de Solla Price.  Price, you’ll recall, was studying for his second PhD here in Cambridge when he discovered the Equatorie of the Planetis manuscript in the library of Peterhouse.  As part of his research, he had what we’re calling King Arthur’s Table built at the Cavendish Laboratory.

Price c. 1948, shortly before coming to Cambridge; courtesy of the Price family.

Price c. 1948, shortly before coming to Cambridge; courtesy of the Price family.

My research has raised lots of questions about Price.  These are interesting not only from a biographical point of view, but also for anyone curious about the atmosphere in which the history of science was launched as a separate discipline in Cambridge in the 1940s and 1950s.  The most obvious of these questions is: why did Price, at the age of 28, suddenly decide to become a historian of science?

This was a big decision.  In 1950 he already had a PhD in metal physics, and was teaching applied mathematics at the then University of Malaya, in Singapore.  He was aged 28, with a wife and baby daughter.  His work was going well: his boss at the University described him as “a very stimulating and helpful teacher.”  But something made him give up his job and move halfway across the world.  He came to Cambridge with no prospect of a job and no real idea of what he was going to do.  Why?

With the help of the archives of Cambridge University and the Royal Institution, I have been able to go some way towards answering this question.  Fortunately, Cambridge’s Board of Research Studies kept a file for Price, which still exists in the University archives.  In addition, Sir Lawrence Bragg, who was a mentor to Price (and about whom I’ve blogged previously), kept a good deal of correspondence relating to him; this is now at the Royal Institution.

When Price was considering coming to Cambridge, the historian C. Northcote Parkinson, who was a colleague of his at the University of Malaya but had previously been a fellow of Emmanuel College, wrote to the Cambridge historian Herbert Butterfield.  (Parkinson is now best remembered as the inventor of Parkinson’s Law, familiar to all students: work expands to fill the time available.)  Parkinson wrote:

A younger colleague of mine here, an applied mathematician with knowledge of physics, has been taking a great interest of late in the history of science…  I think his career may have suffered a little from the breadth of his interests…  His work latterly has been historical and he has been fortunate in having here a complete set of the Transactions of the Royal Society…

He tells me that he means to return to England in December on the general principle that if he does not return soon he will not return at all.  And he wants, if possible, to find a post as a lecturer in the history of science…  So I have taken the liberty of writing to you… to ask whether there is any opportunity going for Dr Price.

Sure enough, Price did return to England in December 1950.  He found a small house in Cambridge and from there wrote to A.R. (Rupert) Hall, who was the University’s only lecturer in history of science, as well as part-time curator of the Whipple collection (which did not yet have a home).  Hall told Bragg about Price’s letter:

I am not quite clear what he wants, but I shall be getting in touch with him immediately.  I know that he would like either a Research Fellowship or University post, but it seems to me that there is no chance of either for him at the moment here…

He would also like to work in Cambridge on a research grant, and I should be very pleased to see him here, and give him all the help I can…  But it does seem to depend rather on money from elsewhere.

Bragg suspected that there might be some pressing problem that made Price want to leave Singapore, and urged Hall to investigate.  Both Hall and Butterfield met with Price, who decided to submit an application to study for a PhD in early 1951.  Butterfield wrote to W. J. Sartain, the Secretary of the Board of Research Studies:

He definitely gave me the impression of a person moving to the History of Science as a result of a long-standing interest in the subject and a real internal urge.  I have had many applications from people wanting to try something on in the History of Science, but on the whole I am quite prepared to believe that Mr. Price is a person we ought to observe and take care of.

Finally, it’s worth quoting Price’s own words, in his application statement:

The subject of the research that I desire to pursue is “The History of Scientific Instrument Making“… Recent developments in the History of Science have clearly indicated the important role of changes in accuracy and design of instruments in the advancement of scientific knowledge…

My professional work as a physicist and my teaching experience have given me a rather wide acquaintance with the use and construction of scientific instruments, and it is this knowledge that I propose to use in the assessment of accuracy and design of early instruments.

So, contrary to Bragg’s suspicions about professional problems, or fear about political upheavals in Malaya, it was a simple case of an unfulfilled passion.  (Of course there’s certainly more to say about Price’s implicit assumption that scientific knowledge and experience were the most important attributes in charting the apparent linear progress of the sciences.)  Price certainly showed his passion when he started his studies in Cambridge, wasting no time in making a name for himself.  He was, of course, to go on to become a successful academic and celebrated analyst of the growth of science.

University of Cambridge Museums

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