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Welcome to the Science & Technology section of the Public Library at dlhoffman.com. Here you will find a number of reference works on a variety of scientific and technical subjects. You can browse through the library by choosing one of the sections listed below or you can search for specific keywords by using the search form on the left.
> Astronomy & Space Science
> Biology & Life Sciences
> Chemistry
> Educational
> Geography
> Medicine
> Physics
We are constantly adding new pages, mirrors, and links to the library so check back often for new entries. Most of the pages listed are local to the STN web site but some are not.

  Astronomy & Space Science
> Express Tour of the Solar System. A quick look around the neighborhood.
>  Eagle Nebula (M16) Hubble Space Telescope Public Pictures. Digital versions of pictures taken by the Hubble Space Telescope distributed publicly as press releases. Check out the Greatest Hits From The Last Eight Years.
> J-Track 3D. If you've never seen a satellite travel across the sky (with your naked eye), then you're missing out on an incredible experience. It's rather cool to see a "star-like" object travel on a straight trajectory (best viewed over five hundred specific satellites (in their Earth orbit). You can rotate the 3D image around to get a better view, get detailed info on any given satellite, and zoom in and out. Requires Java.
> Your Sky, the interactive planetarium of the Web. You can produce sky maps for any time and date, viewpoint, and observing location.

  Biology & Life Sciences
> Bioscan. BioSCAN is a massively parallel, custom VLSI based, biological sequence matching engine.
> BioTech Life Scienc Dictionary. 8300+ terms dealing with biochemistry, biotechnology, botany, cell biology and genetics.
> IMB Jena Image Library of Biological Macromolecules. visual and other information on three-dimensional biopolymer structures. It provides access to all structure entries deposited at the Protein Data Bank (PDB) or at the Nucleic Acid Database (NDB). In addition, general information on the architecture of biopolymer structures is available.
> PDB At A Glance. A hypertext-based classification of the current release of the Brookhaven Protein Databank (PDB).
> Tree of Life Project. The Tree of Life is a project containing information about the diversity of organisms on Earth, their history, and characteristics. The information is linked together in the form of the evolutionary tree that connects all organisms to each other.

> ChemFinder. There are over 75,000 unique substances indexed in the ChemFinder WebServer database from over 350 sites.
> Hazardous Chemical Database. This database will allow the user to retreive information for any of 1991 hazardous chemicals based on a keyword search. Potential keywords include names, formula and registry numbers (CAS, DOT, RTECS and EPA). A service of the Hardy research group at the University of Akron.
> Periodic Table. A local copy of the Los Alamos National Laboratory Periodic Table of the Elements.

> Exploratorium ExploraNet!. Exploratorium Home Page with over 650 interactive "hands-on" exhibits. Located at the Palace of Fine Arts, Marina Blvd. at Lyon St., in San Francisco.
> MAD Scientist Network. A collection of volunteer scientists providing answers to your questions.
> Science Hobyist. All sorts of wild, wacky, and wonderful science projects and ideas. Created and maintained by Bill Beaty.
> Science Questions. A collection of links to help you get your science questions answered.

> Cartographic Images. An indexed collection of digitized antique maps.
Version 2 of the Color Landform Atlas of the United States by Ray Sterner.
> Dictionary of Abbreviations and Acronyms in GIS, Cartography, and Remote Systems. By Philip Hoehn and Mary Lynette Larsgaard. Designed by John Creaser.
> TerraServer. The Micro$oft TerraServer site. Browsing is free but dowloading map images will cost you.

> Drug InfoNet. Provides both information and links to areas on the web concerning healthcare and pharmaceutical-related topics.
> MedicineNet. A resource for looking up information about drugs, diseases and other health related topics.
> RxList Keyword Search. Allows you to search through all the RxList monographs for brand or generic names, symptoms, side effects, or drug interactions.

> Constants. CODATA Internationally recommended values of the fundamental physical constants from NIST.
> History of Physics. Exhibits and online source materials for the history of physics and allied fields.
> The Journal of High Energy Physics. A refereed journal written, run, and distributed by electronic means.


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