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13:15 - 13:55 27 October 2011

Lunch Hour Lecture: Photons, spacecraft, atomic clocks and Einstein – fundamental physics in the space environment


Darwin Lecture Theatre - accessed vial Malet Place | Darwin Building (link Map)
access via Malet Place | London | WC1E 6BT | United Kingdom

Open to: Academic | Alumni | Public | Student
Admission: Free and open to anyone on a first-come first-served basis. Lectures are also streamed live online or can be downloaded after the event.
Ticketing: Open

Speaker information

Professor Marek Ziebart, UCL Space Geodesy and Navigation, ,

Satellites designed, built and launched by humans orbit the earth to carry out a myriad of tasks, friendly and hostile, commercial and scientific. Many of these missions supply critical data to model, mitigate and predict planet-scale processes such as El Nino events, sea level rise, plate tectonics and the earthquake cycle. Spacecraft move at 4 - 8 kilometres per second, and are between 500 and 20,000 km above the earth’s surface but for scientific purposes we need to know where they are to within a few centimetres, and we need to know the time they transmit their signals at the nano-second level. This lecture explains how this is achieved using concepts from fundamental physics.


Dan Martin
020 3108 3840 | dan.martin@ucl.ac.uk


Click here to watch this lecture streamed live online at 1.15pm on the day

satellite orbit