Links for Palaeobotanists

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Databases focused on Palaeobotany and Palaeontology
Databases focused on Botany and Biology
Natural Stones
Ask-An-Earth-Scientist or Palaeontologist
National Geophysical Data Center and NASA
Meta Indexes of Scientific Databases
Glossaries, Dictionaries and Encyclopedias
Palaeobotanical and Palaeontological Collections@
Image Collections@
Picture Search@
Software for Palaeontology@
Software for Botany and Biology@
Software for Geology and Geo-Software Indexes@

Scientific Unit Converter

John Andrews, Bureau of Economic Geology, University of Texas: GIS's Tools Online. The site focuses on conversions commonly used by earth scientists, geographers, and field biologists. Unit conversions exist for length, area, deg min sec to dec deg, dec deg to deg min sec, scale calculator, and degrees to radians.
Provided by the Internet Archive´s Wayback Machine. The Calculator Home Page. has a number of calculator related resources, including an online scientific calculator, units conversion and constants database, and other information. Visitors can also download Calc98, a free scientific, engineering, statistical and financial calculator for Windows and PocketPC.

Michael W. Davidson and the Florida State University (in collaboration with Optical Microscopy at the National High Magnetic Field Laboratory): Science, Optics and You: Powers of 10. Interactive java tutorial journeys in stages from 10 million light years beyond the Milky Way to a treetop to the nucleus at the heart of an atom, in order to visually describe orders of magnitude.

! (owned and operated by H. Alam). For All Type of Online Calculator & Metric Conversions.
A set of mathematical tools including 2000+ units conversion and online calculations. Each tool is developed based on formulas (unit conversions, calculators) taken from Wikipedia & Academic books. This is a free online measurement converter.

! (the site is owned and operated by Web Focus LLC). Free online calculators and converters.

Google: Calculate with Google!
See e.g. here and there.

Micro-Sys ApS, Viby, Denmark: Unit Convert. Unit Convert Online can be used for a wide variety of conversion needs, e.g. metric measurements, lengths, areas, weights, volumes, temperatures, and fluids.

Process Associates of America: Conversion Factors. Including energy, H, S, Cp, P, V and T.

Reade Advanced Materials: Useful Conversion Charts. A selection of charts, e.g. unit conversion factors, the grit and microgrit grading conversion chart, units for particulate measurement, inches to millimeters conversion chart, mills to millimeter conversion, wire gage conversion chart, basic conversion factors and calendar conversion.
Now recovered from the Internet Archive´s Wayback Machine.

Russ Rowlett, Center for Mathematics and Science Education, University of North Carolina, Chapel Hill: How Many? A dictionary of units of measurement.
Snapshot provided by the Internet Archive´s Wayback Machine.

Frank Tapson, Centre for Innovation in Mathematics Teaching, University of Exeter: A Dictionary of Units. This page provides a summary of most of the units of measurement to be found in use around the world today, together with the appropriate conversion factors needed to change them into a "standard" unit of the Systeme International.
This expired link is now available through the Internet Archive´s Wayback Machine.

! Free Unit Converter. This site has over 2100 units in 78 categories, which range from those that are common, such as length, weight, volume, numbers, velocity, and pressure, to more specialized categories like magnetic flux density, electrostatic capacitance, and surface tension.

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This index is compiled and maintained by Klaus-Peter Kelber, Würzburg,
Last updated October 03, 2021

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