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://scrrba.org/
The Southern California Repeater and Remote Base Association (SCRRBA) is a volunteer organization that has coordinated amateur radio frequencies across Southern California since 1970, maintaining over 2,400 frequency coordination records. Visitors can find band plans, hotspot radio guidance, open repeater listings, and coordination policies covering frequencies from 29MHz through microwave bands.
http://schursastrophotography.com/index.html
Schur's Web Portal is a personal site showcasing the creator's passion for nighttime astrophotography alongside interests in running and paleontology. The astrophotography section appears to be the dominant focus, making this a compelling destination for amateur astronomers and stargazers.
https://www.qsl.net/wa4fob
WA4FOB has assembled an extensive categorized directory of ham radio links covering everything from national amateur radio societies worldwide to antenna manufacturers, DXing resources, QSL card printers, and license exam prep. With nearly 500 links organized into over 20 sections, this is a thorough reference point for amateur radio operators looking to connect with clubs, contests, logging software, and equipment dealers.
http://web.mit.edu/redingtn/www/netadv/welcome.html
Created by Norman Hugh Redington at MIT, The Net Advance of Physics is an encyclopedic collection of review articles and tutorials covering the full breadth of physics, organized alphabetically and continuously updated since 1995. Special features include a 19th century physics retro archive, history of science resources, a science poetry collection, and curated links to recent controversies in the field.
http://astronomy.net/
Astronomy.Net is a comprehensive hub for amateur and professional astronomers alike, offering articles, forums, constellation guides, sky event calendars, and equipment classifieds all in one place. Built and maintained by John Huggins since 1994, the site covers everything from telescope optics and astrophotography to meteor showers and planetary conjunctions.
https://qsl.net/ucc
The Ukrainian Contest Club (UCC) is a ham radio organization dedicated to amateur radio contesting in Ukraine, with a notable HamFest event from 2002. The site uses a frames-based navigation system typical of early 2000s web design, suggesting a club hub with member resources and contest information.
http://badastronomy.com/index.html
Phil Plait, astronomer and science communicator, built this site to debunk widespread myths and misconceptions about astronomy, from Moon landing hoax claims to equinox egg-balancing folklore. With sections covering movies, news, TV, and bite-sized astronomy lessons, it is a rich resource for anyone wanting to separate cosmic fact from fiction.
http://cwp.library.ucla.edu/
Hosted by UCLA, this scholarly archive documents the original scientific contributions of 83 eminent women physicists who worked before 1976, drawing on primary sources including the papers in which their discoveries were first reported. Visitors can explore an annotated photo gallery, historical essays, a searchable database, and firsthand accounts spanning fields from nuclear physics to space physics.
http://sguisard.astrosurf.com/
Stéphane Guisard's personal astrophotography showcase, 'Los Cielos de América,' features stunning celestial imagery captured from the Americas and beyond. The image-heavy site is a visual feast for astronomy enthusiasts, presenting the night skies through the lens of a dedicated and skilled astrophotographer.
http://mathpuzzle.com/loyd
Ed Pegg Jr's digitized archive of Sam Loyd's 1914 'Cyclopedia of 5000 Puzzles, Tricks, and Conundrums' presents the classic puzzle book as a complete set of scanned page images freely available for download. This rare public-domain release preserves one of the most celebrated puzzle collections in mathematical history, making it an invaluable resource for recreational mathematics enthusiasts.