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Article on the scale used by the Japan Meteorological Agency to measure earthquake intensity.
Te Richter magnitude scale, or more correctly local magnitude ML scale, assigns a single number to quantify the amount of seismic energy released by an earthquake
Free online encyclopedia article for Seismic scale, powered by Wikipedia
A free web guide to temperature sensors, their uses and vendors.
Free online alarm and clock displaying your computer time. set alarms to wake yourself up or remind yourself of important meetings. Our alarms are dependable, reliable and free to use.
Includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world.
Time and world time zones and time map with current time around the worldhttp://www.worldtimezone.com.
The current time in all countries and major cities of the world. Every world time zone listed and clocks to download.
Time and time zone converter. Readily tell the time anywhere in the world using our frequently updated time zone database.
A service featuring an interactive world atlas and information on local time as well as sunrise and sunset times in several hundred cities worldwide
Get correct and current world times with accurate daylight saving adjustments for every zone. Also, sync your PC clock with an atomic clock server and subscribe to our official database
Public service cooperatively provided by the two time agencies of United States: a civilian agency, the National Institute of Standards and Technology (NIST), and its military counterpart, the U....
Physical constants, numerical constants, universal constants, metric units, SI units, and science survey
These essays aim to show that there are many interesting constants in mathematics
Reference Manual: mathematical constants.
Criticizes metrication as globalist and un-American; provides arguments for the superiority of the English-American system over the metric and links to related sites.
The Metric System and metric conversion calculator download
Free online unit converter. Convert length, area, volume, temperature, and weight.
Offers metric conversion calculators to convert between different units of measurement using the metric, british/american, avoirdupois systems, but also more exotic systems like japanese, ancient...
online conversion calculators, conversion tables and metric formulas for length, area, volume, weight and temperature
Convert units from one measure to another (e.g. meters to yards, liters to gallons). A very extensive collConvert units from one measure to another (e.g. meters to yards, liters to gallons). A very...
A collection of historical scales and weights from different periods of the past 3000 years
Offers enlightenment to the uninitiated and soul-food for fellow practitioners of the calibration art
What would a billion (or a trillion) pennies look like..
Measurement calculator for area, volume, distance, pressure, velocity, energy, performance and power, temperature, time, and units relating to cooking, and recipes.