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://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://thesignman.com/qsl
The SignMan of Baton Rouge offers QSL cards specifically designed for the 10-10 International Net amateur radio organization, with multiple card styles including standard and eyeball business-card sizes. Pricing, ordering information, and design previews are all presented here, alongside links to other SignMan products like name badges, magnetic signs, and Skywarn items.
https://wmplota.org/
WMPLOTA (Walmart Parking Lots On The Air) is a quirky annual amateur radio event that challenges ham radio operators to work amateur satellites while operating portable from Walmart parking lots. The site organizes the event held each July, featuring rules, leaderboards, scheduled activations, and a community wiki for this uniquely accessible spin on portable satellite operation.
https://knotplot.com/
Created by Robert G. Scharein, the KnotPlot Site is a visually stunning exploration of mathematical knot theory, featuring hundreds of images and animations generated by the KnotPlot software for Windows, macOS, and Linux. Visitors can browse galleries of torus knots, Celtic knots, hyperbolic knots, Brunnian links, and fractal structures, as well as download the KnotPlot program itself to visualize and manipulate knots in three and four dimensions.
http://neofoundation.org/astrolabe
The Astrolabe Astronomy Club is a local amateur astronomy club based in Wheeling, WV, offering information on membership, meetings, and events for stargazing enthusiasts. Created by Pat Plunkett, this early-2000s club site serves as a community hub for sky watchers in the West Virginia area.
http://nightskylive.net/
NightSkyLive.net appears to be a site dedicated to live or near-live views of the night sky, likely featuring sky cameras or astronomy broadcasts. The domain name strongly suggests a focus on real-time celestial observation for stargazers and astronomy enthusiasts.
https://www.qsl.net/k/ka5rtf//narc
The Neshoba Amateur Radio Club (N.A.R.C.) serves ham radio operators in Neshoba County, central Mississippi, hosting a Sunday night net on the N5EPP repeater at 147.330 MHz. The site lists 2005 club officers, links to callsign lookup services like QRZ and Buckmaster, and connects visitors to local and regional radio nets.
https://solar.lowtechmagazine.com/
Low-tech Magazine is a solar-powered publication that challenges high-tech assumptions by exploring low-energy, sustainable, and often obsolete technologies as practical alternatives to modern power-hungry solutions. Visitors will find detailed DIY guides for solar-powered appliances, historical analyses of pre-industrial techniques, and thought-provoking essays on energy, heating, cooking, and sustainable living.
http://marsradio.net/MARSmain
The Metropolitan Amateur Repeater System is the official site for a Los Angeles-area ham radio repeater network founded in 1993, operating on 447.820 MHz and linked 24/7 to a Missouri repeater via EchoLink. Beyond repeater info, the site offers local earthquake reports, weather, and traffic resources for Southern California ham operators.
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.