Science & Nature
1439 sites
Subcategories:
- Astronomy & Space (396)
- Chemistry (8)
- Earth Sciences (26)
- Biology (79)
- Physics (30)
- Mathematics (59)
- Weather & Climate (104)
- Amateur Radio (682)
- Electronics (47)
http://qth.com/w0aih
The W0AIH Contest Station site documents an impressive amateur radio operation spread across 120 acres of Wisconsin farmland, featuring over 50 towers and six HF operating positions. Built as a tribute to Paul Bittner W0AIH (1933-2018), the site covers the station's hardware, operators, antennas, and the storied history of 'The Farm' that became a landmark visible from Interstate 94.
http://animalinfo.org/
Animal Info is a comprehensive reference site dedicated to rare, threatened, and endangered mammals around the world, offering detailed species profiles covering biology, ecology, habitat, and conservation status. Visitors can browse by species group, search an alphabetical index of common and scientific names, or explore by country to discover biodiversity and population data for hundreds of at-risk animals.
http://gothosenterprises.com/black_holes
Jillian's Guide to Black Holes is an informal yet thorough educational resource originally written as a university physics project at Syracuse University, covering black hole formation, classifications, accretion disks, Hawking radiation, wormholes, and how to locate black holes across the universe. Written by Jillian in an approachable, conversational style, it stands out for its careful citations, multilingual reach (including a Basque translation), and years of ongoing updates beyond its academic origins.
https://astronomy-links.net/wimps.html
Clark M. Thomas presents a provocative essay arguing that WIMPs and Higgs bosons are not fundamental particles, advocating instead for a graviton-based understanding of dark matter and dark energy. The piece blends cosmology, philosophy, and physics speculation in a style that challenges mainstream scientific consensus on the composition of the universe.
http://forrestmims.org/
Forrest M. Mims III is a prolific science author and self-taught scientist whose personal site documents decades of atmospheric research including UV-B measurements, volcanic aerosol tracking, and twilight photometry at Mauna Loa Observatory. With over 7.5 million books sold and a Rolex Award for science, Mims shares original scientific data, publications, and photography spanning solar radiation, dust layers, and environmental monitoring.
https://www.qsl.net/o/on6dv/on6dv_hamlinks.htm
ON6DV Daniel's massive ham radio link directory collects nearly 3,900 categorized links covering everything from boat anchors and QRP clubs to DX clusters, SSTV, EME, and repeaters. Maintained weekly, it spans dozens of subcategories and serves as a comprehensive jumping-off point for amateur radio enthusiasts worldwide.
https://homepages.abdn.ac.uk/nph120/astro/astlinks.html
Assembled by John S. Reid at the University of Aberdeen, this curated astronomy links page was built to support a Level 1 Astronomy class, covering general astronomy, the solar system, space missions, and observatories. With over 200 links organized into clear sections, it points students to tools like Stellarium, NASA catalogues, online textbooks, and the European Space Agency.
https://www.qsl.net/w3sz
Roger Rehr's W3SZ page is a long-running amateur radio site hosted on QSL.net, active from 1997 to 2007. The callsign W3SZ and the QSL.net hosting strongly indicate a ham radio enthusiast's personal presence on the web.
https://www.qsl.net/ecara
ECARA appears to be an amateur radio club or organization hosted on QSL.net, the well-known hosting platform dedicated to ham radio operators and groups. The directory index suggests a collection of club files and resources, likely including meeting info, member details, or radio-related documents.
https://electriciantraining.tpub.com/14182
A comprehensive online reference covering the U.S. Navy's NEETS Module 10, this resource walks through wave propagation, transmission lines, and antenna theory with detailed chapters on electromagnetic fields, radio wave propagation, and sound waves. Published by Integrated Publishing, it offers the full technical training manual with options to download as PDF or order in print, making it a valuable reference for electronics students and hobbyists alike.