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://ciechanow.ski/moon
Bartosz Ciechanowski's deep-dive interactive article on the Moon covers everything from its orbital mechanics and phases to tides, eclipses, craters, and gravitational effects, all brought to life with stunning real-time 3D simulations and draggable visualizations. One of the most richly illustrated and technically impressive science explainers on the web, it invites readers to genuinely experience lunar concepts rather than just read about them.
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://nsradio.org/
The North Shore Radio Association (NSRA) serves amateur radio operators in the Peabody and Danvers, Massachusetts area, coordinating weekly club nets on the 145.470MHz repeater and organizing VE licensing exam sessions. The site provides members with information on club meetings, ARES/Skywarn emergency communications, DMR digital radio, and public service activities.
http://schematicsforfree.com/
SchematicsForFree is a volunteer-run archive offering free electronics schematics, circuit diagrams, and service manuals covering audio, video, automotive, and test equipment. Updated regularly since 2022, it embodies the original open-sharing spirit of the web, providing hard-to-find technical documents at no cost.
http://w1mx.mit.edu/
The MIT Radio Society (W1MX) is America's oldest college amateur radio station, a student-run club at MIT focused on RF engineering, telecommunications, and radio science. The site covers membership info, meeting schedules, club history, ham exam resources, balloon programs, and a capital campaign to build a new station.
http://science-workshop.com/
Science Workshop appears to be a science-oriented site, though its content is extremely minimal with only a single image visible at crawl time. The domain name suggests a focus on science education or hands-on scientific topics, but without further content the site's exact subject remains uncertain.
https://www.qsl.net/w1ee
John Sabini (WB1GRB) runs this personal ham radio page from Stamford, Connecticut, sharing his Advanced Amateur Radio License activities including repeater frequencies, simplex phone patch info, and New England frequency listings. A snapshot of early 2000s amateur radio culture in southwestern Connecticut, the site also links to local emergency communications groups like WECA and GNARC Norwalk.
https://pgadey.ca/
Parker Adey is a math lecturer at the University of Toronto Scarborough who shares formal notes, informal blog posts, reading recommendations, and teaching materials spanning topology, linear algebra, and beyond. The site doubles as an academic hub with a CV, publications list, office webcam, and a decade of evolution captured in the Wayback Machine.
http://exoplanets.org/
The Exoplanet Orbit Database at exoplanets.org is a scientific reference cataloging confirmed exoplanets with detailed orbital data, maintained by researchers affiliated with the California Planet Survey. Visitors can explore interactive data tables and plots, search the full database of confirmed planets and Kepler candidates, and read methodology documentation covering the team's approach to curating high-quality planetary orbits.
https://tonnesoftware.com/
Tonne Software offers a catalog of free and low-cost electrical engineering programs for Windows, covering filter design, meter scale drawing, great-circle mapping, Smith charts, and more. The site also hosts technical articles and tutorials on topics like speech processing, AM demodulators, and CW bandpass filters, many published or submitted to QEX magazine.