Science & Technical
General
Calculator's On-Line Center - Part III Science A-Z
Information from Archaeology / Anthropology to Radiation from Martindale's "The Reference Desk."
Dictionary of Scientific Quotations
Quotations and their source from Archimedes to Wooley.
How Stuff Works
This site offers simple, clear explanations of how things work from car engines to VCR's and even bread. You may scroll down the page or click on the Power Panel for a search index.
The Last Word
Everyday science questions and answers.
Old Farmer's Almanac
Weather forecasts, heavenly details, sun, moon and planets, rise and set times.
Public Library of Science Biology Journal
New scientific publication featuring free works of significance in all areas of biological science, from molecules to ecosystems, interfacing with other disciplines such as chemistry, medicine and mathematics. Content will develop as issues are added.
Sams Photofact Online Index
Index to help identify and locate electronic schematics repair documentation by number.
Science.gov FirstGov for Science
The gateway to reliable information about science and technology from across Federal government organizations. Agencies covered are the Departments of Agriculture, Commerce, Defense, Education, Energy, Health and Human Services, Interior; Environmental Protection; National Aeronautics and Space, and National Science Foundation.
Science Fair Project Resource Guide
Provides the necessary requirements and resources to complete a science project. Information supplied by Kidspace of the Internet Public Library.
Science Reference Services
From the Library of Congress, contains “Science Tracer Bullets” with histories and bibliographies, along with Science Reference Guides, and Internet Resources covering many science and technology topics.
Statistical Reports of U. S. Science and Engineering
SRS information on 14 periodic surveys.
Time Zones / Tides / Sunrise / Sunset
10,000 Year Calendar
View a month or year calendar for any year from 1 to 10000 A.D. All leap years and calendar changes are accounted for.
Official U.S. Time, The
Current time for U.S. time zones, also includes information about timekeeping history under Time Exhibits.
Tide Tables from NOAA
Current and 4-day predictions. Some historic information.
Worldwide Time Zones - Isbister International
Gives the current times for locations world-wide.
Automobiles
Kelley New and Used Cars
Car prices from the National edition.
Edmund's Automobile Buyer's Guides
Provides pricing guides for new and used cars and trucks. Includes road test results, information on recalled vehicles.
NADA Guides
New and used car pricing and car buying information and resources. In addition, the site offers free values for classic cars, motorcycles, antique motorcycles, boats, personal watercraft, snowmobiles, ATVs, RVs, SUVs, trucks, minivans, aircraft and manufactured housing.
Astronomy & Physics
Astronomy
Asteroid Comet Impact Hazards
From the NASA Ames Space Science Division. All known earth-crossing asteroids are listed, and predictions of asteroid/comet close approaches to the earth.
Comet Observation Page
Information on currently visible comets with information on cometary astronomy.
International Meteor Organization
Site contains a list of meteor showers, observation information, glossary and more.
Heavenly Details
Old farmer's Almanac lists solar/lunar eclipses, and full moon dates for seven years. Includes current month information.
NASA Homepage
Aeronautics and space research information.
The Nine Planets
Everything about planets in our solar system.
Sky Information
Griffith Observatory site includes Sky Report, Eclipses, Moon Phases, Moonrise / Set, Sunrise / Set, Sun's Path, Tide Tables, Astronomical Zodiac, and Planetary Alignments in 2000.
Physics
Calculator's On-Line Center - Part III Science/Physics and Astrophysics
Astro-Physical Units to Wave Interaction & Simulations.
National Institue of Standards and Technology (NIST) Reference on Constants, Units and Uncertainty
CODATA Internationally recommended values of the Fundamental Physical Constants. Search for value by name (i.e. speed of light).
Chemistry
ATSDR ToxFAQs: Hazardous Substance Fact Sheets
Agency for Toxic Substances and Disease Registry's alphabetical index of toxic substances and diseases.
Abbreviations of Chemical Compounds
Includes Acronym database.
Calculator's On-Line Center - Part III Science / Chemistry
Chemistry - Unit Conversion to X-ray Interactions with Matter.
Chem-Finder Database
Locate common types of chemical information. Search by a chemical name, formula, molecular weight, or CAS Registry Number.
Fundamental Physical Constants
Freie Universität Berlin, Chemistry Department site.
Periodic -Web Elements
Complete table of elements, atomic weights, etc.
Earthquakes
USGS Earthquake Information
United States Geological Survey latest earthquake information.
Geology & Oceanography
Global Vulcanism Program - Volcanos of the World
10,000 years of volcanic eruptions. Keyword search, alphabetic and geographic indexes.
Glossary of Oceanography and the Related Geosciences with References
Terms, abbreviations, and acronyms used in oceanography and related fields.
MTU Volcanoes Page
Current global activity.
Volcano World
Research and information on volcanoes around the world.
Life Sciences
Biology
Bio Tech
Collection of life sciences resources and reference tools with extensive information on biochemistry and biotechnology. Features a life sciences dictionary, chemical acronyms database and annotated web links to other sites.
BiologyBrowser
Free web site by Biosis offering resources for the life sciences community. Searchable by organism, subject and geographical region.
Botany
National Plants Database
United States Department of Agriculture Natural Resources Conservation Service.
Zoology
The Electronic Zoo
Comprehensive animal information site. Includes zoo information.
Endangered Species Home Page
Information about U. S. threatened and endangered animal and plant species.
The Virtual Frog
Dissect a frog without having to touch one.
Measurements / Mathematics
Calculators On-Line Center / Mathematics
Basic Math Calculators, Unit Conversion Calculators, Slide Rule, Arabic / Roman / Mayan, Abacus, Knot Theory, Linear Equations, Logarithms, Math Animations, Trigonometry, and Rational Numbers.
Common Weights And Measures
Includes mathematical notation for orders of magnitude, metric prefixes, and common U.S. and metric equivalents.
Conversion Factors
Many methods, comparisons and examples.
World of Mathematics
“The web’s most extensive mathematics resource”. Covers astronomy, biography, chemistry, mathematics and physics providing equations, definitions, explanations and more.
Weather & Meteorology
Welcome to WeatherPost
Forecasts for 220 countries & 3600 cities. Archival historic weather data.
The Weather Channel
Breaking Weather, Tropical Update, U.S. City Forecasts, International City Forecasts, Maps, and Travel Wise