Tag: Electrical Engineering

Royal Institution Christmas Lectures: 1974


50 years ago on this very day I was with Professor Eric Laithwaite at the Royal Institution in London. We were recording a section of the 1974 Christmas Lectures Programme Number 3 “Jam Yesterday, Jam Tomorrow”. I’ve covered what we did in a previous 2017 post, but this time I’ve dug deep into my own archive for an extra gem that has never been heard before. I’ve also found the original tape that is on the Revox tape-recorder seen over on the left hand side so that we can hear it a little better. I say better, in fact that tape is actually falling apart, with the back-coating peeling off the plastic tape, it was a nightmare to transfer.

I won’t go back over what I’ve already written in that previous post but will fill a few more details into what happened these 50 years ago. The tape that was commissioned from the BBC Radiophonics Workshop contained a huge amount of stuff that we never did use. I think the Producer of the Christmas Lectures simply gave them a brief to come up with a load of stuff featuring sounds that were backwards. They seemed to go overboard with speech at various speeds forwards and backwards and it was not what we really needed, so was not used. The one track from them that we did use was a Palindromic music sequence where, in the live lecture, I pointed out where the backwards and forwards started and stopped. Interestingly, although the sections you can hear below are technically forwards and backwards in truth they are not. The Radiophonics Workshop simply created the music and ran the notes forward, but when in “reverse” it’s the musical notes played in a reverse order not actually the sound backwards.

When it came to my “Happy Christmas” recording, that was truly me speaking the sounds that I heard backwards. I had to mimic my original sound recording when I heard the words coming out backwards. This is the difference with the Radiophonics music recording.

Both Professor Laithwaite and I had some extra fun with the whole speaking backwards experiment. In the week leading up to the actual lectures we had a visit from BBC Radio 2 host John Dunn (1934-2004). He had a daily show called Late Night Extra and he wanted to feature what was about to happen during lecture 3. I stayed up very late on the night of the broadcast and captured it for posterity. I doubt many will have already heard it.

The lecture was broadcast on BBC 2 on New Year’s Eve, December 31st 1974. College was actually open and running that day, so I stayed late for the transmission which I recorded onto videotape. I subsequently got my own DVD copy from the BBC’s original master videotape which is still held in their archives. Incidentally, I was also involved with the original 1966 series that Eric Laithwaite presented called “The Engineer in Wonderland”. Those tapes were sadly wiped by the BBC but in this photo you’ll see me indicated over on the right hand side.

Here I am with Professor Eric Laithwaite about to play my backwards recording.

 

From the original master audio tape here I am with that recording, but this time I’m letting you hear what it sounded like when it was recorded and before then being played backwards to come out forwards (are you still with me?) Keep an eye on the caption at the top where you can see when it changes direction.

 

This is the original Radiophonics recording of  their “Palindromic” music.

 

John Dunn from BBC Radio 2 Late Night Extra on 19 December 1974.

Colin Grimshaw 28 December 2024

Prof. Eric Laithwaite’s Lab: c1973

While going through some of the 8mm films that STOIC shot, I found this. It was part of a reel of items that included the 1973 Pan Cake Race which I featured in a previous post. Therefore I am assuming that this footage was also shot in 1973. It’s various demonstrations taking place in the lab of Professor Eric Laithwaite, who has featured many times before (and will again, I’m sure). The demonstrations are by one of his research students, whose name currently escapes me.

Firstly, but of out focus, is his office door name plate from down on level one of Electrical Engineering. Interestingly, we see some of the copper windings being installed on a levitator (might even be the ‘magnetic river‘ under construction?). I don’t recall any other photos or film of this being carried out, so this is maybe unique. Then we see the levitation of an aluminium plate, which is followed by the model train which he used very regularly in presentations. Finally we see the research student talking to some other students, but I don’t recognise them as being from STOIC. I’m not sure that the models we see in the film were actually featured in the 1974 Christmas Lectures, which would have helped me date this footage. However, it is just possible that the motor having the windings added was in Christmas Lectures programme 5.

I’ve just reviewed that lecture number 5 (around 53min into the lecture) and I’m now very sure that this is indeed the motor we see being constructed in his lab. So a date of 1973 would seem to work.

Colin Grimshaw January 2024

Prof Eric Laithwaite – Heretic: 1994

The BBC Heretic series in 1994 featured Professor Eric Laithwaite. It focused of course on his now infamous Gyroscope theories and demonstrations, one of which I recorded in the TV Studio in 1983. By 1994 he had retired from Imperial College and had been given lab space at the University of Sussex, close to where he lived after retiring from Imperial College. Interestingly, the Royal Institution let them recreate the controversial 1974 evening discourse, even though they apparently never published the paper and distanced themselves from the whole event.

Lots of archival material from his days at both he University of Manchester and in the lab at Imperial College. There’s also a tiny clip from a programme series called “The Engineer’s World” which was recorded in his lab. I’ve never seen that before and is dated on the BBC Genome Web page as 31 October 1971.

I’m sure that even now, there are lots of people with their own views on what he both came up with, and also suggested, could be achieved with Gyros! But if nothing else, he was fun to work with if you ever had the chance.

Colin Grimshaw September 2023

Prof Eric Laithwaite-Book Interview: 1980

Sitting on a videotape for 43 years was an interview with Professor Eric Laithwaite. In April 1980, Graeme Shaw from STOIC spoke to him on the launch of his book The Engineer Through the Looking Glass. The book was based on the 1974 Royal Institution Christmas Lectures of the same name. Back in 2014 I wrote about that series in one of my blog posts.

It was by chance that I realised that this interview had not yet been copied from videotape. It’s one of only a few interviews that we have with Eric Laithwaite. This was of particular interest to me because I was personally involved with programme number three called ‘Jam Tomorrow and Jam Yesterday’ in the 1974 TV series. I also got a credit in the book “…Colin appeared ‘officially’ in the third lecture taking over part of the lecture in effect…” So you can see why I was excited to re-discover this particular interview. I also suspect that I probably would have made the arrangements for this interview to take place.

Colin Grimshaw March 2023

An Electric Car at Imperial in 1972?

Yes, it’s hard to believe but there was research into electric cars at Imperial way back over 50 years ago. And this is once again a story for which the original videotape was long ago erased (assuming there was one). The programme was called La Jamais Contente.

What we do have are some precious photos that were taken at the time of some of the recordings on 20 June 1972. STOIC presenter Richard Woodhead is seen along with Electrical Engineering academic staff member and “EV” researcher John Prigmore (both far right with John Prigmore’s back to camera). The vehicle was a “bubble car” that was converted to electric operation. It really is so long ago that I can’t remember any of the details about the programme or indeed why it was made.

As usual I resorted to searching the FELIX newspaper online archive and found this item announcing the showing of the programme almost 5 months after the location recording took place.

The still photos are interesting because it has reminded me that we could not transport the Ampex video recorder. You can see the “Link” camera we had for such work outside of the studio and this had cabling from the roadway on level one up into the TV Studio on level three. That’s me with a series of cue cards and the countdown clock to ident the sequence being recorded. From looking at the countdown clock board, these were sequences shot as ‘inserts’ for the programme which was to have been edited.

Here’s Richard Woodhead with the car, he’s pretending to plug it in for recharging. Again, this was down on the level one roadway by Electrical Engineering. It’s very difficult to see, but the small sign stuck to the wall near his shoulder says “Electric Vehicle Charging Station”. How funny that 50 years later Imperial College really does now have charging stations for EV’s on the South Kensington campus!

The countdown board indicates that STOIC member Paul McCallum directed this, but sadly he’s not seen in any of these photos. However, in this reverse shot of Richard Woodhead and the electric car you can see my friend Tim Jeffes sitting between me (left) and the camera. It looks like he’s possibly writing on the cue card boards which were used for prompting of the script.

I had been trying to work out how we did the sound for these recordings and I’ve just spotted in this photo that Richard was wearing a radiomic that would have been received up by the TV Studio window on level three. I’m assuming that this was a sequence where we actually got to see the car working and that he was just stepping out of the car to record a piece to camera.

And finally a shot of the car (left photo) with John Prigmore inside. You can just see his white shirt over on the right of the car windscreen. I wonder whatever happened to YUC 998 after all of the research came to an end? From some research I found that John Prigmore died on 13 September 1984. It indicated that he worked at Imperial from 1947 to 1982 and that during is career he wrote several books although none on the subject we see here. And wouldn’t it have been great to still have these 1972 videotapes in an age where electric cars have now come into being?

And a sad note to end on. I’d reached the end of writing this article and remembered that I had previously had emails from Richard Woodhead. I thought he might be able to shed more light on this video. But I found to my shock that he had died back on 5 July 2021, so my memories of this are all we now have.

Colin Grimshaw February 2022

Prof Eric Laithwaite – uncut: 1983

I have previously made available the following two videos which I recorded for Professor Eric Laithwaite. Recently I was able to locate the original camera footage shot on each day, and of course, prior to being edited. I thought that after 40 years it was worth uploading this uncut footage.

There are two versions of the Gyro Wheel and several retakes & close-up’s of the Plate Levitator. The Gyro Wheel was recorded in the TV Studio and the Plate Levitator down in Eric Laithwaite’s lab on level one in Electrical Engineering. There will be a few start and stops, along with colour bars and black in-between. You’ll also hear me over the studio intercom and off-camera when down in the lab. As I have said before, he was very easy to work with and understood and appreciated how videos, films and TV programmes were made and also the requirements to reshoot sections or close-ups. In the TV studio you will also see Barry Owen his Research Assistant helping to spin the wheel up. And down in the lab, Eric Laithwaite will give him a few instructions during the lifting of the plate.

 

Colin Grimshaw January 2023

Students: 1971

During the recent transfer of 8mm films into digital, I came across a film that I had forgotten all about.

In 1971 some 3rd year students in Electrical Engineering came up with the idea of shooting a film as part of their end of term project. I’m pretty sure that these students must have had a connection with Professor Colin Cherry who was then Professor of Telecommunication in their department. I am assuming this connection with the film because both he and his former secretary are credited at the end. After 50 years we will never actually know.

Digitising the film was, as usual, not an easy job. The sound is a magnetic track bonded to the edge of the film and playable only via a suitable 8mm projector. Fortunately, when the TV Studio was closed, I had rescued the Eumig 8mm projector that was actually used to record the soundtrack back in 1971. The magnetic track was added to the film using a very clever device that glued the very thin piece of magnetic tape onto the edge of the film. If you look above the sprocket holes you can see this track. I know that some films had lost their tracks when the glue gave way, but this film was all OK.

I recorded the sound from the projector, cleaned it up and adjusted the speed to be correct. I was able to judge this because I was amazed to discover that I had actually recorded part of the voice-over and that was my clue to getting the speed correct. I then adjusted the duration/speed of the film to then match the soundtrack duration.

Sadly the students that made this are not credited on the film, so we may never know who they were. But, after 50 years here’s the film called “Students” made in 1971.

Colin Grimshaw November 2022

Prof Eric Laithwaite – Local Heroes: 1999

In 1999 the BBC had a TV series called Local Heroes. It was presented by Adam Hart-Davis and featured various people who had made significant contributions to science etc. One programme featured Prof Eric Laithwaite. Filming took place in Eric Laithwaite’s original lab in Electrical Engineering. They needed various extras, so not surprisingly they contacted me. I provided the portrait photo (taken by my colleague Neville Miles); as well as giving them access to some film clips, and also pointing them towards other BBC materials that I knew about. One clip that I mentioned to them was the Noel Edmonds ‘Multi-Coloured Swap Shop’ clip. Having been involved with the 1974 RI Christmas Lectures I also made sure that they knew about those too. Not a bad piece, except they got his title incorrect. It should have been Professor of Heavy ELECTRICAL Engineering, they left electrical out!

The opening sequence is before the college main entrance changed completely, so that’s a flashback for those who remember it the way it once was.

Colin Grimshaw July 2022

Topic: 1973 and 1974

I have just stumbled across a copy of Felix for 4 December 1973. In it I found a promotion for STOIC’s weekly news-magazine programme TOPIC. The photo shows that is was promoting the “Golden Moments” of Rag Week in the Christmas edition of the programme on Friday 7 December. I’m sure that Rag Week would have been a few weeks earlier and suspect that this would have been shot on film, that possibly needed external developing, by Kodak perhaps?

I can also tell that this was just around the time when the co-axial cable had been run from the TV Studio all the way through the heating tunnels to the Beit Quad building. Sadly as usual, not a single edition of a TOPIC programme remains, they were all erased. What we do have are some of the 8mm films that were used within the programmes and I am now featuring those when I have scanned the film into digital. In two cases I have an audio tape of the actual soundtrack, as in Christmas and Easter editions.

One single item that does remain is an opening sequence, recorded in the original TV Studio on 30 January 1974. I really can’t say whether or not this was actually used in any of the programmes. Mark Caldwell, STOIC Chairman is seen, along with Paul Jarvis as Floor-manager. Dave Salmon is on camera 1 which is seen panning around. You can also see the original animated logo caption rotating around that was made by Selwyn Castleden. There’s an over the shoulder view of the control room with Steve Bell and Selwyn. There is also a brief glimpse of STOIC’s portable “rover’ videotape unit as Paul Jarvis walks in front of it. You will also see a great shot of the huge 2 inch Quadraplex videotape recorder that was donated by RCA. The very rare colour photo, taken on 1 May 1974 shows Selwyn and me in the control room looking very hard at a monitor.

 

Colin Grimshaw June 2021


 

PM Gordon Brown Visit: 2008

In October 2008 the then Prime Minister Gordon Brown paid a visit to the Imperial College Business School. We were there to cover the event along with a crew from Number 10 and also ITV News. In a presentation that he made, he commented that he already had a connection with Imperial College because a relative had been a Professor here. Indeed he was more than just a Professor, he was a Head of Department. In fact his Uncle was Professor John Brown, Head of Electrical Engineering for 21 years and my head of department when the TV Studio was within Electrical Engineering. On the left hand side of this rare photo is John Brown seen during the retirement reception for Departmental Superintendent, John Ganley, in around 1976.

And there is even more of Gordon Brown’s relative on video. Cast your mind back to the blog about STOIC’s first news programme, IC Newsreel in 1970, where he made an appearance giving an obituary for Lord Willis Jackson.

 

Colin Grimshaw June 2021