Scientific and Technological Events

© Copyright Andy Pepperdine 2007 - 2009.

This time line follows normal practice, the Julian calendar is used for dates preceding the introduction of the Gregorian in the appropriate country, or a suitable conversion is used for non-Roman based calendars where necessary. For dates before the putative origin of the Julian calendar (labelled BCE) it is well to remember that there is no year zero in that calendar.

CE = Current Era, according to the conventional Gregorian calendar in use now.

BCE = Before Current Era

The column labelled "Political events" is intended to give an indication of events that may have affected the developments of scientific thought, and to provide a comparison with often quoted or well-known historical events.


This is work in progress, and always will be. Where there is no citation for the information, it is to be considered suspect. Otherwise, follow the references and judge for yourself.

If you find an error, or something out of date, or have something to add, let me know at 'andy' helicon '' (slight obfuscation to try to prevent spam).

Useful Links

The following web-sites are useful for getting initial information on certain topics.

Organisation of charts

The time line is divided into a number of separate sections for convenience:


© Copyright Andy Pepperdine, 2007 - 2009

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