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Continuous Tone vs. Halftone

Five Tetrahedra is a complex print featuring a multifarious process. When thinking about the examination of the print, the difference between Continuous Tone and Halftone image formation was questioned. When observing an image under magnification, Continuous Tone is when the darker and lighter areas or different colors appear to flow into each other without any apparent dot … Continue reading


While casually checking Facebook today, we stumbled upon a fantastic blog entitled “The Art Attack Podcast.” Essentially, the podcast teaches visitors art viewing skills in a relaxed setting while being introduced to some of Washington D.C.’s art treasures from the comfort of their own homes (computers?). The most recent podcast talks about Nam June Paik’s … Continue reading

What if…

… we were meant to create a whole exhibititon around Five Tetrahedra? This was today’s task in our Collections Curatorship Class. In the course of a short and very efficient brainstorming the fivetetrehedra team came up with the following introductory text for its “quasi-exhibition”: Five Tetrahedra, a letterpress print by Chris Crabtree (b. 1943), is an experimentation.  … Continue reading

New Discovery – “WAVES I” by Chris Crabtree Slade Prize winning project

When searching for the provenances of all works by Chris Crabtree in UCL Art Museum’s collection database last Thursday we found out that his work “WAVES I” won a Slade Prize in 1972. For this reason – all Slade Prize winners being represented in UCL’s Art Collection – the work was integrated in the same … Continue reading

Raspberry Pi

A small, simple computer has been developed by the Raspberry Pi Foundation. It is a basic computer device and the user connects up the components themselves i.e. mouse, keyboard, and can write their own programming codes. It is targeted towards children with the aim that it will help them better understand computing. Nowadays computers do … Continue reading

Science Museum Field Trip

An early morning trip to the Science Museum proved to be very informative and useful, and who doesn’t like the Science Museum?! We went to the second floor to look at the exhibit that shows the history of the computer and while were there, we found a display that explained the form of the Tetrahedron … Continue reading

A “Supercomputer”

During our meeting with Crabtree, we were discussing the first ‘supercomputers’.  Here is an example of one of the first super computers, built between 1950 and 1954. Reproduced from: Jürgens, C. M., 2009. The Digital Print: A complete Guide to processes Identification and preservation. London: Thames & Hudson.


During our chat with John Crabtree he mentioned the first computer programme introduced to him at Walthamstow College of Art, by Nigel Hitch; Fortran. It was a simple, general purpose programme which John said took 5 minutes to get his head around. Here’s a good old Wikipedia link which explains more.

John Crabtree Day

This morning we had our first meeting with the artist of “Five Tetrahedra” Mr John Crabtree, and what a pleasure it was.  He was informative, insightful, happy to discuss the work and still enthusiastic about many areas including technology and current affairs.  He spent almost two hours with us answering our questions and happily discussing … Continue reading

Science Museum

A visit to the Computing section at the science museum could prove to be useful.