For those of you near London with an interest in Greenwich, Harrison, and pendulum clocks there's an event on April 18 that might be worth your time. Harrison Decoded: Towards a Perfect Pendulum Clock http://www.rmg.co.uk/whats-on/events/harrison-decoded http://www.rmg.co.uk/sites/default/files/harrison_decoded_draft_programme_250215-3.pdf /tvb