The Institution of Engineering and Technology (IET) is working to engineer a better world. We inspire, inform and influence the global engineering community, supporting technology innovation to meet the needs of society. The Institution of Engineering and Technology is registered as a Charity in England and Wales (No. 211014) and Scotland (No. SC038698). theiet.org @TheIET Our offices London, UK T +44 (0)20 7344 8460 E faradaycentre@ietvenues.co.uk Stevenage, UK T +44 (0)1438 313311 E postmaster@theiet.org Beijing, China T +86 10 6566 4687 E china@theiet.org W theiet.org.cn Hong Kong T +852 2521 2140 E adminap@theiet.org Bangalore, India T +91 80 4089 2222 E india@theiet.in W theiet.in New Jersey, USA T +1 (732) 321 5575 E ietusa@theiet.org