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://hamgallery.com/
The K8CX Ham Gallery, run by operator K8CX, is a sprawling archive of ham radio history featuring a QSL Card Museum, rare DX sound clips spanning decades from the 1930s onward, and photo galleries from the legendary Dayton Hamvention going back to 1957. With searchable databases, DXCC entity tracking, Hall of Fame lists, and DXpedition galleries, it is an exceptional resource for amateur radio enthusiasts and historians alike.
https://dsimanek.vialattea.net/home.htm
Donald Simanek, a physics professor, has assembled a sprawling collection of resources covering physics puzzles, perpetual motion machines, pseudoscience debunking, creationism criticism, and science humor. Highlights include the Museum of Unworkable Devices, illustrated lectures, and a rich archive of skeptical and educational content that has earned recognition as one of the top skeptical websites on the web.
https://eclipse.gsfc.nasa.gov/SEgoogle/SEgoogle2001/SE2017Aug21Tgoogle.html
Fred Espenak's NASA Eclipse Website hosts an interactive Google Maps tool showing the precise path of totality for the August 21, 2017 total solar eclipse, including central line, northern and southern limits, and 10-minute interval markers. Hosted by NASA's Goddard Space Flight Center, the page provides detailed data on greatest eclipse, greatest duration, lunar limb profiles, and eclipse weather resources.
https://astrotulsa.com/
The Astronomy Club of Tulsa is a non-profit organization that has been bringing astronomy to Oklahoma residents since 1937, operating its own observatory southwest of Tulsa near Mounds and hosting regular public stargazing events. Visitors can find event schedules, monthly newsletters, sky maps, and resources for both beginners and experienced astronomers.
https://rfcafe.com/
RF Cafe is a comprehensive resource for RF and electronics engineers, offering formulas, reference data, vintage magazine archives, software tools, forums, and a massive parts and services directory. Running since 1996, the site blends technical depth with nostalgia, featuring scanned articles from classic publications like QST, Popular Electronics, and Radio-Craft alongside modern engineering utilities.
https://barc.org/
The Boston Amateur Radio Club (BARC) connects ham radio enthusiasts across the Greater Boston area, offering repeater access, club meetings, licensing exam sessions, and public service events. The site includes field day archives dating back to 2000, repeater guides, a club newsletter, and resources for both new and experienced operators.
https://jedaler.tripod.com/elec.html
Jedaler's Electronics Page, built by JaKab-Daniel, is a curated link collection focused on circuit schematics, microcontrollers, RF antennas, robotics, and hobby electronics projects. Visitors will find references to PIC microcontroller resources, Tesla-related circuits, xenon flash designs, and free energy machine plans alongside general electronics archives.
https://astronomy-links.com/
Clark M. Thomas of Roanoke, VA has assembled a free, non-commercial collection of astronomy links organized to help stargazers at all experience levels discover resources, from deep sky databases and space telescope galleries to star party listings and homework help. Highlights include curated 'Best of the Best' picks, a newest-links section for returning visitors, and a broad sweep of resources covering Mars missions, the Messier catalog, observing clubs, and more.
https://mikedaub.com/
Mike Daub is a physics and mathematics educator with a master's from UC Berkeley who spent five seasons at the South Pole researching experimental cosmology on the ACBAR project. His personal site covers his academic background, libertarian politics, photography, and a no-nonsense hand-coded HTML philosophy with no frameworks or tracking.
http://warac.org/
The West Allis Radio Amateur Club (W9FK) is a Wisconsin-based ham radio organization that sponsors the Wisconsin QSO Party and the David Knaus Memorial Scholarship. Visitors can find club news, event information, and resources for amateur radio enthusiasts in the greater Milwaukee area.