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)
https://content.lib.washington.edu/salmonweb
Curated by the University of Washington Libraries Special Collections Division, this digital archive spans 1890 to 1961 and brings together photographs, documents, and original materials tracing the history of salmon fishing and the roots of the Pacific Northwest salmon crisis. Visitors can browse topics ranging from Native American fishing practices and salmon canneries to hatcheries and the Columbia River salmon industry.
https://pzk.org.pl/news.php
The Polish Amateur Radio Union (Polski Związek Krótkofalowców) is the largest national organization in Poland dedicated to amateur radio communication and satellite radio services. The site serves as the official hub for PZK members, featuring weekly bulletins, news updates, a callsign lookup database, and organizational resources in both Polish and English.
http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
HyperPhysics is a sprawling educational reference site from Georgia State University covering virtually every topic in physics through an interconnected web of concept maps and concise explanations. Visitors can explore everything from classical mechanics and thermodynamics to quantum physics and relativity, with formulas, diagrams, and worked examples throughout.
https://projectrho.com/starmap.html
Winchell Chung (aka Nyrath the nearly wise) maintains this ambitious 3-D starmap project dedicated to the golden age of science fiction and real astronomical data. Inspired by E.E. 'Doc' Smith's classic space operas, the site blends scientific accuracy with a deep love of the stars to create interactive three-dimensional maps of nearby stellar neighborhoods.
https://stormeffects.com/
Brian Morganti's StormEffects is a personal site dedicated to storm chasing, featuring an extensive collection of storm and landscape photos, chase videos, and chase summaries from real weather events. The site also touches on astrophotography, making it a rich visual record of one enthusiast's pursuit of dramatic natural phenomena.
http://dxing.info/introduction.dx
DXing.info, created by Mika Mäkeläinen, is a comprehensive guide to the hobby of DXing, the practice of listening to distant and foreign radio stations far outside their normal coverage areas. The site covers equipment, propagation, a DX glossary, expedition logs from countries like Australia, Finland, and South Africa, and audio samples of rare distant broadcasts.
https://qsl.net/we4ncs
The NC State Alumni Amateur Radio Association (WE4NCS) connects NC State University alumni who hold amateur radio licenses, serving as a community hub for Wolfpack grads passionate about ham radio. The site features an alumni registry form, a list of licensed NC State alums, and links to university resources, sports, and engineering programs.
http://aimspice.com/
AimSpice appears to be a SPICE circuit simulation software site, offering tools for electronic circuit analysis and modeling. The minimalist page redirects visitors to the main document, suggesting a focused software or technical resource for electronics engineers and hobbyists.
http://homingin.com/
Maintained by Joe Moell (K0OV) since 1988, Homing In is a comprehensive resource dedicated to radio direction finding, foxhunting, and amateur radio direction finding (ARDF) competitions worldwide. Visitors will find news about international championships, technical projects, equipment guides, event results, wildlife tracking applications, and a wealth of articles spanning decades of expertise in the hobby.
https://assa.org.au/
The Astronomical Society of South Australia (ASSA) is an active community organization offering public and member viewing nights, monthly meetings, and astronomy resources for all skill levels. The site features a rich collection of guides covering astrophotography, comets, variable stars, Aboriginal astronomy, and solar system events, plus details on observing sites like Stockport Observatory.