Palace Of Justice Clock
Alex Bartel
Aztec Calendar Stone
Library Of Congress
Clockmaking
Science Photo Library
Deep Time
Victor De Schwanberg/science Photo Library
Aztec 'reckoning Of The Sun' Cycle
Library Of Congress
Ordered Clock Times
Victor De Schwanberg
Aztec Calendar
Library Of Congress
Harrison's Precision Pendulum Clock 2 #3
Adam Hart-davis/science Photo Library
Sundial Diagram
Middle Temple Library
Ordered Clock Times #1
Victor De Schwanberg
Harrison's Precision Pendulum Clock 2
Adam Hart-davis/science Photo Library
Perpetual Almanac
Middle Temple Library/science Photo Library
Hourglass
Middle Temple Library
John Harrison's Equation Of Time
Adam Hart-davis/science Photo Library
Strontium Ion Trap Ring
Andrew Brookes, National Physical Laboratory/science Photo Library
Strontium Ion Trap #6
Andrew Brookes, National Physical Laboratory/science Photo Library
Jumbled Clock Times
Victor De Schwanberg
Jumbled Clock Times #1
Victor De Schwanberg
Roman Sundial
Middle Temple Library
Clock Faces
Victor De Schwanberg
Brocklesbury Park Stables And Clock
Adam Hart-davis/science Photo Library
Types Of Sundials
Royal Astronomical Society/science Photo Library
Strontium Ion Trap #3
Andrew Brookes, National Physical Laboratory/science Photo Library
Brocklesbury Park Clock Mechanism #2
Adam Hart-davis/science Photo Library
Climate Change Research
Robbie Shone/science Photo Library
Castillon Barrage And Sundial
Chris Hellier/science Photo Library
Castillon Barrage And Sundial #1
Chris Hellier/science Photo Library
Aztec Calendar Stone #1
Library Of Congress
Aa Battery In A Clock
Cordelia Molloy/science Photo Library
Harrison's Precision Pendulum Clock 2 #2
Adam Hart-davis/science Photo Library
Hour Glass
Martyn F. Chillmaid/science Photo Library
Antique Garden Sundial #1
Jon Wilson
Astronomical Clock
Martin Bond
Harrison's Precision Pendulum Clock 2 #1
Adam Hart-davis/science Photo Library
Hourglass
Patrick Llewelyn-davies/science Photo Library
Harrison's Precision Pendulum Clock 2 #5
Adam Hart-davis/science Photo Library
Strontium Ion Trap #4
Andrew Brookes, National Physical Laboratory/science Photo Library
Portable X-ray Fluorescence Spectroscopy
Adam Hart-davis/science Photo Library
Analogue And Digital Sports Watches
Martyn F. Chillmaid/science Photo Library
Brocklesbury Park Clock Mechanism
Adam Hart-davis/science Photo Library
Brocklesbury Park Clock Mechanism #1
Adam Hart-davis/science Photo Library
Lady Astronomer And Time
Royal Astronomical Society/science Photo Library
Harrison's Precision Pendulum Clock 2 #4
Adam Hart-davis/science Photo Library
Strontium Ion Trap #5
Andrew Brookes, National Physical Laboratory/science Photo Library
William J. Frodsham
Royal Astronomical Society/science Photo Library
Antique Garden Sundial
Jon Wilson
Laser Beams In Atomic Clock
Jila, Baxley
Jumbled Clock Times #2
Victor De Schwanberg
Aztec Calendar Divisions With The Moon
Library Of Congress
Hourglass, Conceptual Image
Victor De Schwanberg
Astronomical Clock, Artwork
Pasieka
Maya Calendar, Diagram
Claus Lunau
Watch movement, SEM
Science Photo Library
Osl Dating Research, Analysis Machine
Robbie Shone
Osl Dating Research, Sample Plate #2
Robbie Shone
Osl Dating Research, Analysis Laser
Robbie Shone
Osl Dating Research Laboratory
Robbie Shone
Watch Gears, Sem #1
Susumu Nishinaga
Botanical Sundial, 19th Century
Gros Horloge Astronomical Clock
Alex Bartel
Osl Dating Research, Analysis Laser #2
Robbie Shone
Osl Dating Research #1
Robbie Shone
Hourglass, Conceptual Image #1
Victor De Schwanberg
Sand Timer #1
Lawrence Lawry
Watch Gears, Sem #2
Susumu Nishinaga
Watch Gears, Sem #3
Susumu Nishinaga
Watch Gears, Sem #1
Steve Gschmeissner
Osl Dating Research, Sample Plate
Robbie Shone