Larry Hench, Emeritus Professor of Ceramic Materials died on 16 December 2015.
He joined Imperial in 1995 from the University of Florida, having made the seminal discovery in 1969 of Bioglass − the first reported synthetic material to form a bond with living tissues.
As Chair in Ceramic Materials at Imperial, he set out to uncover the basic cell biology mechanisms that gives Bioglass its remarkable properties. He set up the Tissue Engineering and Regenerative Medicine Centre with the late Professor Dame Julia Polak. There they made the fascinating discovery that the unique bone growing properties of the glass were due to the dissolution products of the glass stimulating bone cells at the genetic level. Members of their team went on to make the glass into 3D scaffolds for use in bone regeneration.
The only video footage in our archive is what we shot for inclusion in his inaugural lecture in June 1996. And, unlike other inaugurals that we have recorded clips for, this one actually has him in it.
On the 29th January 1998 a series of presentations and talks were given during the Chapman/Whitehead memorial meeting. One of these presentations was given by Anne Barrett from the Imperial College Archives. Her presentation was “From the Arithmometer to Electronic Artihmetic – The History until 1955.
Alfred North Whitehead was Professor of Mathematics at Imperial College 1914-1924 and Sydney Chapman was Professor of Mathematics 1924-1946.
Anne also mentions the construction, by college members in the 1950’s, of the Imperial College Computing Engine the ICCE 1.
In the late 1960’s and running through until 1979, the ILEA (Inner London Education Authority) ran and operated its own unique analogue cable television network. By the time of its closure it had linked together all of its 1,400 schools & colleges within the London area and also universities, including Imperial. It was Europe’s largest closed circuit television network. The system was installed and operated by the GPO Television Service, but by the time of privatisation and renaming as BT, the network was doomed, with closure looming. We had connection to the cable network in the early 1970’s when the University of London created and operated its own Audio Visual Centre. Programmes made by the ULAVC were recorded in their own TV studio, based at 11 Bedford Square in central London. Transmissions were all made from videotape by the ILEA TV Studio staff at the Battersea main hub. In the case of programmes made by the ULAVC a separate Channel 7 was operated for their exclusive use. ILEA’s own programmes for schools were on channels 2, 3 and 4. The ILEA studios and recordings were all to broadcast standard using 2 inch Quadraplex videotape whilst the ULAVC ran on IVC 1 inch videotape. As can be appreciated, all of the programming across the channels was therefore carried out from pre-recorded videotape. But, the network could be run live from any of the three studios at the Battersea main hub. Around 1976 I had the brainwave idea to suggest to the ULAVC that we make and provide some programmes from the Imperial studio. The only materials that might be of interest to other universities were perhaps some of the STOIC output which was gaining popularity with the introduction of celebrity interviews with those like film director/actor Mel Brookes and housewife-superstar Dame Edna Everage, otherwise known as actor Barry Humphries, seen in the photo on the left with Mark Caldwell in the Imperial TV studio. Several videotaped programmes were made with the specific idea of being shown on Channel 7 (Terry-Thomas was one), but I then went a step further and suggested we do something live! After I’d consulted with the ULAVC and then the ILEA Battersea operations staff we got a transmission slot and studio access. On 17 February 1977 a pilot programme called London Lunchbreak went live on the air from the ILEA Battersea TV studios. The photo on the right shows main presenter James Sinclair during the live transmission. Because of a connection I had with the then BBC “film night” TV series, I managed to get Barry Norman to the studio to take part in the live transmission. Three further programmes were produced in the ‘London Lunchbreak’ series, but our enthusiasm was dashed when we heard the very next month on 31st March 1977 that the network was to close in early 1979. There was little point in continuing when the end was close. We had left it too late to get involved with the network, perhaps a couple of years earlier would have been better and given us a few more transmissions? Over on the left, in the gloom, you can see me directing one of the live programmes at the ILEA Battersea studios. The videos below are a recording of the pilot London Lunchbreak which includes a sound fault during a film clip! Remember that this programme was totally live from the ILEA studios. Also, the very last programme made and transmitted over the network by the ILEA, containing a rather large number of old programme titles (jump to the end when you get to that part). The ULAVC never made a farewell programme but continued its videotape operation, but with no cable output. ILEA continued in a similar way until, like the ULAVC, it was totally closed. Both the ULAVC and ILEA had converted to colour production by 1980, however, the now old GPO VHF cable network was only just capable of transmitting high quality colour (it was originally designed for analogue black and white in 1967). So perhaps it would have been difficult to continue with a poor technical service? However, I managed to capture a rare c1977 test transmission from ILEA in colour. It was made on Channel 2 and I was told that the ULAVC loaned ILEA a colour camera to make the live test, which seemed to work, that’s the last video down below.
Oh, and then there was Westminster Cable TV and another opportunity for live TV, but this time from Imperial College’s own TV Studio; but that’s yet another story, so far untold…
An AP1000 Super Computer was donated by Fujitsu Labs to Imperial College to inaugurate the Imperial College/Fujitsu Parallel Computing Centre, opened by HRH Princess Anne in May 1994. It had been in continuous use since then and achieved remarkable longevity for an experimental parallel machine. The facility had been funded by a partnership between Fujitsu, the EPSRC (Engineering and Physical Sciences Research Council), the Higher Education Funding Council and the Office of Science and Technology. The award on the UK side amounted to £1.65M. This was backed by a significant contribution from Fujitsu, continuing a fruitful collaboration between Imperial College and Fujitsu.
In 1997 Imperial College based a new campus-wide service on an 80 node Fujitsu AP3000 parallel computer, which was linked to the Fujitsu VX vector system, a resource amongst the most powerful in the UK. The systems provided a theoretical aggregate peak performance of nearly 50 Gflops with 15 Gbytes of memory and more than 400 Gbytes of high speed disc storage. With the way technology moves, I suspect that’s all a bit ‘last century’ by now (which if course it is).
In the year 2000 the following announcement was made:
“Shigeru Sato, President of Fujitsu Laboratories of Japan, visited the department of computing on 15 March 2000, to give a seminar and switch off the Fujitsu AP1000 in the Imperial College Fujitsu Parallel Computing Centre. Mr Sato’s talk was followed by the ceremony to switch off (seen on right) the AP1000 with the rector, Lord Oxburgh. The AP1000 pioneered much work in parallel applications (CFD, artificial life, visualisation, environmental modelling) and parallel methods research (Parallel Software Technology, Performance Modelling, data mining, optimisation). The machine was still in active use prior to its decommissioning and the groups using it will be transferred to newer machines”
I made this video to commemorate and archive this important event both for Imperial and Fujitsu. Once again the commentary is by Michael Rodd.
It’s 50 years since the official opening of the University of London Reactor Centre housed at Imperial’s Silwood Park campus. Silwood Park is located about 25 miles West of Central London, near the village of Sunninghill, Ascot, Berkshire. On 22nd June 1965 the official opening took place with the Principal of the University of London, along with the Imperial College’s Rector Sir Patrick Linstead, Pro Rector Sir Owen Saunders and Chairman Lord Sherfield. In 2011 the process application to decommission the ‘GEC 100kW Consort’ reactor was started and is being continued today. Sadly, although the archive has BBC Footage shot at the 1965 opening ceremony, it’s minus the sound track, so the on-screen presentation and interviews mean very little. That’s rather a disappointment as it captures a key part in the college’s history. The photo on the right is during construction. What I do have is a segment from the 1982 documentary that I made about Silwood Park and fortunately we shot a section about the reactor and its operation. Tracy Poole spoke with Dr McMahan a lecturer in Physics about the operation of the reactor centre. We shot inside the main reactor hall, control room and experiments lab. I’m so glad we did this because it will be the only archive material shot about the reactor before it eventually disappears for good. Because it’s a ‘pool type’ water cooled and water moderated reactor it’s possible to open the reactor up and seen inside the core (yes it’s true). Then you will see a bright blue glow caused by the Cherenkov radiation. The image on the left show this glow which I witnessed myself when I took the shots for the video whilst standing on top of the reactor. When we made this video the reactor centre was still relatively new and only 17 years old, now it’s celebrating 50 years! As indeed I do myself, later this year, with 50 years of working at (and since early retirement, occasionally with) Imperial College!
Below is the documentary extract about the reactor centre and also some lovely aerial helicopter footage we had shot, which shows the beautiful Silwood Park campus.
If you were studying Chemistry at Imperial College in the early 1980’s you would almost certainly have come across the series of teaching videos that we made. These were designed to provide a single definitive version of classic experiments carried out in the labs. The way that it worked was that during a lab period students would have a number of ‘demonstrators’ who positioned themselves around the lab. They would then proceed to show the undergrads the way to achieve what was needed of them during the session. This was deemed to have flaws when it was discovered that very slightly different versions were actually being demonstrated. So, colleagues in the Chemistry Department asked for some of the experiments and also the techniques required, to be captured on video. These videos would then be made available to the students in the college library, prior to the lab session day and also at the start of the actual lab session via video players located around the lab. Starting 32 years ago, from 1981 to 1993, 11 of these classic experiment videos were made. Two of these: ‘Recrystallisation’ and ‘Using an Oil Vacuum Pump’ are seen on this page, and are for archive interest only.
Making them was not always so easy. To capture the experiments we needed to be able to record, as much as possible, in ‘real time’. That is, record the action without stopping or having to then edit later. We needed to be able to try and capture what would have been demonstrated live in the lab. Also, when an experiment had started, it couldn’t always be stopped on a whim from me because I couldn’t get a good camera view! So, we had to be able to record with several cameras and this meant shooting in the College TV Studio** where we had three cameras available. Shooting this way meant we could, as much as possible, run in real time; if we had rehearsed what was going to happen. So, using three cameras we were able to plan ‘blocks’ of the experiments that could be recorded before we had to stop and reset cameras etc
Chemistry in a TV Studio has its problems though. And one of THE biggest problems was with white lab coats. Our early colour cameras had a single stripe vidicon tube in them and the bright white labs coats were susceptible to almost glowing in the end result shot . The light required for good pictures was a little higher than for black & white and highlights would very easily burn out, a good example being the glassware. The three cameras also had manual adjustment for colour, so getting all three to give well balanced images, all the looking same, was a nightmare at times! Another problem was ensuring that I could see on the monitors what was required, without a hand or shoulder blocking the view. We tended to position a monitor so that the person demonstrating could see whether or not this was happening. It was easier for them to move than for the cameras to do so.
After 32 years some of the videos are starting to show their age and playback is becoming difficult. It took a few hours before I could get a stable playback I was happy with, in order to transfer them onto DVD.
If you studied Chemistry and came across these teaching videos during your course then please do let us know via the comment option below.
** Even though we are now in a “YouTube video age”, sadly in February 2007 Imperial closed the TV Studio, along with its Control Room, Editing Suite and also the Video Conferencing Service. However, the videotape archive remains; but is now held in the main college archive facilities, which I still have access to when required.
In a previous entry you would have seen the video I made to celebrate the City and Guilds College Centenary in February 1985. As part of the week of events an exhibition was run entitled “Technology 2000”. It was opened by Margaret Thatcher -who was then Prime Minister- on 27 February 1985.
Professor Bruce Sayers was then Dean of City and Guilds and made the introduction. This version of the speech is the full version. The one already seen in the C&G centenary video is edited down to fit into a specific duration. Here then is the full, unedited version, from the original 1985 master tape.
Here is the link to the City and Guilds Celebration video on YouTube. Included in that video is the tour Mrs Thatcher took of the exhibition Technology 2000 and shows some of the people she met.
This is an additional and brief entry to mark the recording of a video I made 30 years ago this very week. The video was “The Office of the Professional” made with, and for, Professor Bob Spence from Electrical Engineering. You’ll find this video and others in the section about Bob’s work, but I thought it worth repeating. I saw Bob recently and we both recalled the making of the video and how complicated it was. For example, the various TV screens seen running were in fact fed from different video players, so making these all run in sync was not easy. In fact, along with the recorder that was actually recording the video from the camera, we had 3 machines all needing to be run at the same time. This was early days for us and our colour camera (yes camera, as we had only one) which needed a lot of light to give good pictures.
The video was shot during this week in December 1980 and edited, after the Christmas holiday, in January 1981. Bill Buxton in his 2007 book Sketching User Experiences is quoted as saying, in reference to the video that this “is the first example of an envisionment video that I am aware of” and that it was “remarkable for its insights”. As I have already detailed in the previous full entry about Bob, the office desk that was constructed was faced in cardboard and green felt. One oversight was perhaps the telephones, we never attempted to change these to anything futuristic, so they look a bit odd now. The video also captures parts of the college long since changed and Alumni may remember: the main entrance, the steps and the original walkway going towards Electrical Engineering. These shots were taken on a dark and wet December afternoon back in 1980.
Professor Robert Spence, passed away on Friday 20th September 2024, at the age of 91.
In the summer of 1984 I was asked by Peter Burridge the Telecoms Manager, to make a special video to alert all members of Imperial College to the fact that we were about to put into service a new electronic telephone exchange. Until this time we had two systems running side by side: an internal automatic exchange and an external (BT) manually operated switchboard.
1950’s Automatic Telephone Exchange
The original internal exchange, installed sometime around 1959, was located in the basement of the Royal School of Mines, whilst the external switchboard was installed in the Sherfield Building around 1969. This was probably to coincide with the opening of the building that year. For those only familiar with how things operate these days, the old system now seems very ancient. It required two telephones on a desk, internal and external. You called via the internal exchange with very old dial phones (in some cases), whilst to make an external call you picked up the receiver of the other phone and waited for the operator to answer.
Sherfield Building Manual Switchboard
You then had to request an ‘outside line’ and from there you could dial your call. All incoming calls to Imperial were answered by the operator and then put through to the extension in question. There were no connections between the two systems! So if a location only had an internal phone there was no way to contact them from outside of the college. The internal exchange catered for some 2,500 extensions whilst the external catered for 1,500 extensions.
The ‘new’ Statesman telephone 1984
The new system was deemed so “new” that training sessions were put into place at various locations around college. These were designed for either staff or students and some even took place in the Great Hall. It may seem odd, but at that time most secretaries, for example, were using normal electric golf-ball typewriters and few people had contact with computers unless they were academic. So, having to press button combination’s to achieve things like two way calling or call transfer had some people a bit stumped, thus the training sessions were arranged. As this concerned all of college there was great publicity and this can be seen from this mid-summer edition of the student newspaper Felix from 17 August 1984 (pages 4 & 5).
The colour stills of both the 1950’s exchange and switchboard are taken from the videotape I shot. So far, I’ve not located any other images of, what was, a major part of the daily unseen operation of Imperial College. I suspect that these sequences in the video may have been the first time that some people had seen any of these background services operating. I was also one of the first to experience the new system.
A few weeks before operation began I was asked if I’d wait by my current internal phone at around 6pm one evening whilst it was manually switched from the old to the new system. I then received a call via the new exchange to test all functionality and quality of sound. The rest is now part of college history as we all take the new systems as part of normal daily college life. But is was just a little bit different when you picked up the external phone and knew the person on the switchboard and had a short conversation before saying…”can I have an outside line please?”.
Since the start of this archive blog people have asked me various things about the videotape collection. Questions range from: when did the collection start; how many tapes are there; and what formats of tape do you have. So, I thought that just for once I’d write an entry without an actual video in it. Some questions I’ve been asked are answered in the “about this video archive blog’, but I’ll go through them again anyway.
Some of the 700+ tapes in the video archive
The earliest videotape (one inch ‘A’ format) dates from about June 1970 and is on our original videotape format made by the American company Ampex. This company invented the world’s first commercial videotape format back in the mid 1950’s (2 inch Quadruplex). So, our oldest tape was made only 15 years after the invention of videorecording itself. Sadly, playing these tapes back is slowly becoming a problem. Equipment is no longer accessible on campus to run some of the formats we have, but it is possible to use commercial facilities (at a cost). Recently, the earliest collection from the student TV service (STOIC) came under our access.
Ampex ‘A’ format tapes have gone sticky
I’d forgotten just how many of the original one inch videotapes they still had. There are gems yet to be seen, dating from the early 1970’s through to about 1980, in fact their collection now has more one inch tapes than we do (many of ours are long gone). Anything of importance was transferred to another (the latest at the time) videotape format, but some items (mainly STOIC’s) remain, frozen in time, awaiting that day of playback once more when finances allows us to transfer them into a new digital format.
Playing these early tapes back has recently become a problem anyway. There is an effect called Sticky Shed Syndrome which means that the binder, which sticks the oxide onto the plastic tape, is breaking down. What appears to be happening is that the binder is taking in moisture and going sticky. It’s SO sticky in fact that when tapes are run, the oxide and binder come off the plastic tape and stick to all parts of the videorecorder that the tapes run past. After only a few moments of playback there will be a very loud screeching noise followed by the video head clogging and the machine grinding to a halt. If you put your finger onto the guides inside the machine it will be sticky and covered in tape oxide and a sticky goo.
Oxide is shedding from magnetic tapes
In the recent blog entry called “seen and gone” I found some old audio recordings of the soundtracks of erased videotapes. These audio tapes also suffered the same problem of shedding oxide. When I started to play them the oxide came off the plastic, as you can seen in the photo. My fingers can be seen through the plastic tape. The one good thing was that whilst running the tapes through the recorder I was also copying it onto computer to then go onto disc.
The U-matic videotape format suffers too
These playback problems have happened because some tape manufacturers got various chemical mixing formulas wrong. It was only in the mid 90’s or so that the problem was fully appreciated. There is only one way around the problems of playback. The tapes, audio and video, have to be baked. That is, the tapes have to be heat treated at something like ±50 oC for a few hours or more. This draws the moisture out, allowing immediate playback to get the material onto another modern format. The temperature used is critical, too high and the ‘Curie point’ can be reached and the tapes automatically erased, or at least the magnetic properties will be lost and thus the recording data will be gone for ever. So there are problems and dangers anyway with this method of recovery!
The various tape formats we have to work with sitting on the edit suite desk
We are therefore faced with a slight problem of playback, even with tapes still in use today like the U-matic system. Most of the tapes seen on the shelves in the top photo are of this format and many are causing playback problems. I’ll be experimenting with heat treatment soon to sample a few tapes for transfer. In most cases I’ll put these onto DVD, assuming they’ll play back okay after treatment. Today, we have many tapes formats as can be seen in this last photo. We’ve gone through: One inch open spool both low and high band; U-matic low and high band; Betacam and now DVCam. Also we’ve encountered half inch open spool, Philips cassette, VHS and so on. With some 700 tapes now being held in the collection, the question is how long will we be able to play back any of the many formats of videotapes that we have?
Larry Hench, Emeritus Professor of Ceramic Materials died on 16 December 2015.
growing properties of the glass were due to the dissolution products of the glass stimulating bone cells at the genetic level. Members of their team went on to make the glass into 3D scaffolds for use in bone regeneration.
