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Dendrochronology | Dating using tree rings. Also a little about
carbon-14 and solar events. |
History Hub |
"A support community managed by the National
Archives for researchers, citizen historians, archival
professionals, and open government advocates." |
Vintage
News |
Not exactly what most of us think of as
"history", but a lot of good stuff that's old or very old. |
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Comments: |
CIA
World Factbook Maps |
Wide range of maps kept up-to-date |
Geospacial
Solutions |
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Longitude:
The True Story of a Lone Genius Who Solved the Greatest
Scientific Problem of His Time. |
Excellent book by Dava Sobel. Could
also belong in Time Keeping.
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Vivid
Maps |
Many things plotted on maps |
World
Atlas |
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Geo
Lounge |
all things geography |
Geokov
Map Projections - types and distortion patterns Free Educational and Spatial Data Resources |
Online mapping tools. |
National
Geospacial-Intelligence Agency |
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Big Ben
recorded in 1890 |
"The History Guy" on Youtube. Recording
is after the closing credits. |
Computerphile's
overview of time zones. |
Serious and very funny. |
GPS World
|
This site could also be in Cartography or Geography. |
(The) Greenwich
Meridian |
Large site of information including history,
calculations and links. |
Network Time
Protocol |
NTP software, Public server pool |
Royal
Observatory Greenwich |
The historical standard for GMT. 300
foot error. The actual observatory was closed in
1998. Deeper
explanation with extensive references. |
Tycho
(U.S. Naval Time Service Department) |
Time standards |