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://w9fz.com/
Bruce Richardson's personal hub site collects his various web projects, with ham radio travelogues and VHF Society conference coverage sitting alongside sections on Boy Scout councils, military air base history, and surplus electronics for sale. The callsign W9FZ anchors the site and the ham radio content is the most distinctive thread running through his online presence.
https://kaskakokos.neocities.org/
Kaskakokos is a Spanish-language personal site from Cantabria featuring a section dedicated to local plant life, alongside writings and projects by the creator. The 'Plantas de Cantabria' section suggests a focus on regional flora, making it a charming mix of nature documentation and personal creative output.
https://www.qsl.net/lz1iii/html/1001link.html
A massive curated directory of amateur radio links maintained by LZ2HM, covering everything from ARRL resources and antenna plans to SSTV, ATV, antique radios, aurora monitoring, and weather resources. With over 1,300 links organized into dozens of categories, it serves as a comprehensive reference hub for ham radio operators of all interests.
https://marc-hq.org/
The Motorcycling Amateur Radio Club (MARC) is a community group that combines motorcycle riding with ham radio operation to support charity fundraising events like Bike MS rides in Southern California. The site includes a tech center, photo gallery, newsletters, event calendar, and membership information for riders and operators who want to combine their passions while giving back.
https://mistal2.tripod.com/CAS
The Cumberland Astronomical Society is an amateur astronomy club based in Gallatin, Tennessee, dedicated to bringing astronomy to the general public. The club hosts monthly events at local schools, libraries, and parks, though this Tripod page now redirects visitors to their updated website at CumberlandAstronomicalSociety.org.
https://oevsv.at/home
The ÖVSV (Österreichischer Versuchssenderverband) is the official national amateur radio organization of Austria, covering all nine regional associations and offering resources on licensing, operating modes, contests, and technical information. Visitors can find band plans, contest calendars, QSL card services, satellite radio info, and news about events like HAM RADIO Friedrichshafen and the organization's 100-year anniversary.
http://uvaa.org/
The Utah Valley Astronomy Association (UVAA) is an informal stargazing club based in Utah Valley, founded in the early 1990s by Rich Tenney and maintained online by Paul Witte, offering a community for observational astronomy enthusiasts with no dues or obligations. The site preserves the club's history and hosts a notable Binocular Astronomy Resource Page, along with links to star parties, a member gallery, and connections to other Utah astronomy societies.
http://asnne.org/
The Astronomical Society of Northern New England (ASNNE) is an all-volunteer non-profit based in Kennebunk, Maine, founded in 1982 to promote public awareness of astronomy. Members enjoy star parties, telescope observing sessions, monthly discussions, and access to the Starfield Observatory, making it welcoming for beginners and experienced amateur astronomers alike.
http://flashwebhost.com/tcvr
Created by VU3PRX, this site provides detailed circuit diagrams and construction guides for a 7MHz SSB transceiver built around the MC1496 integrated circuit. The project covers every stage from VFO and ladder filters to power amplifiers and antenna design, making it a practical reference for hams looking to build their own HF radio from scratch.
http://webmineral.com/strunz.shtml
Webmineral.com presents a comprehensive reference for the Nickel-Strunz Classification System, organizing over 4,700 minerals into a systematic hierarchy of chemical groups from elements and sulfides to silicates and organic compounds. Built with contributions from mineralogist James A. Ferraiolo whose classification scholarship dates to 1982, the site serves as a serious database tool for mineralogists, crystallographers, and collectors.