<ul><li>Cyril Hilsum, former president of the Institute of Physics (IOP), celebrated his 100th birthday last week at the Royal Society of Chemistry.</li><li>Hilsum made significant contributions in developing commercial applications for semiconductor gallium arsenide and creating the UK's first semiconductor laser.</li><li>He was honored with various awards during his career, including the Max Born Prize, Faraday Medal, and the Royal Society's Royal Medal.</li><li>Currently, Hilsum works part-time as the chief science officer for Infi-tex Ltd, continuing to contribute to the field of physics at the age of 100.</li></ul>

Former IOP president Cyril Hilsum celebrates 100th birthday

Discover more