skip to primary navigationskip to content
 

Flexible Chocolate

An interactive public lecture 

I think it was Dawn French who said "There are two types of people - those who like chocolate and those who lie". Everyone likes chocolate and the bendy chocolate lecture on Saturday 13 March 1999 filled the Babbage lecture theatre to capacity - that's around 300 people. It was presented by Dr Malcolm Mackley and Robert Marshall from the University of Cambridge, Department of Chemical Engineering.

chocolate The lecture was intended for everyone aged 12 or over, though there were some smaller children there too, and they enjoyed the messier experiments.

Malcolm and Robert began with a description of what chocolate is and where it comes from, which was the cue for a large globe to be rolled down the aisle.
choccie Then, after a short discussion of the physics and chemistry of chocolate, they got on to the experiments. Volunteers who helped with experiments were given Easter eggs and almost every child in the audience wanted to be a volunteer. The first "victim" demonstrated the melting point of chocolate by sucking a probe coated in chocolate. A large screen showed the temperature in her mouth


chocchocgoo

The messiest experiment showed the traditional way of making chocolate into shapes. That is, you melt it, pour it into moulds and wait for it to cool down and set. At the end of the lecture, this mess still hadn't cooled enough to be turned out of the mould.

mrmchoc

The new way of making chocolate into interesting shapes is to extrude it. This toy shows the idea of extruding - in this case squirting plasticene through a small hole.

choc More volunteers then helped to work the machine that makes real bendy chocolate

and this is bendy chocolate....

knotted

 

 

 

RSS Feed Latest news

SPARC success for CEB-India research collaboration

Feb 18, 2019

Scheme for Promotion of Academic and Research Collaboration (SPARC) grant awarded to CEB- Indian Institute of Technology Roorkee research collaboration.

Ineos Oxide Summer Intern Scheme launched at CEB

Feb 08, 2019

Ineos Oxide is looking for talented undergrad chemical engineering students to join their summer intern scheme and help them solve real-world problems.

New EPSRC Sensors CDT

Feb 05, 2019

New EPSRC Centre for Doctoral Training in Sensor Technologies and Applications for a Healthy and Sustainable Future at CEB.

View all news

Upcoming events

Celebrating LGBT and History Month

Feb 01, 2019

University-wide

Science Festival at CEB

Mar 23, 2019

CEB, Phillippa Fawcett Drive

Stokes200 Symposium

Sep 15, 2019

Pembroke College, Cambridge

VPF8 Viscoplastic Fluids: from Theory to Application 2019

Sep 16, 2019

Jesus College, Cambridge

Upcoming events