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://caacwv.com/
The Central Appalachian Astronomy Club is a 501(c)(3) non-profit based in West Virginia dedicated to promoting amateur astronomy and partnering with local schools and universities. Visitors can learn about the club's 20-foot Ash Dome observatory housing a 16-inch Meade LX200 telescope, upcoming meetings and events, and how to join.
http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
HyperPhysics is a sprawling educational reference site from Georgia State University covering virtually every topic in physics through an interconnected web of concept maps and concise explanations. Visitors can explore everything from classical mechanics and thermodynamics to quantum physics and relativity, with formulas, diagrams, and worked examples throughout.
http://n3sh.org/
The Wireless Association of South Hills (WASH) is an amateur radio club based in the South Hills area, offering a rich calendar of activities including Field Day, PA QSO Party, VHF/UHF repeater nets, ARRL licensing exams, and ARES/RACES emergency communications support. The site serves as a hub for both seasoned hams and newcomers curious about getting licensed, with how-to guides, a club newsletter called the WASHRag, and information on public service events like Skywarn spotting.
https://kasonline.org/astroweb.html
The Kalamazoo Astronomical Society's curated astronomy link directory groups hundreds of carefully selected web resources into subject categories, from amateur telescope making and astrophotography to planetary exploration and dark-sky parks. Organized like a yellow pages phone book, this extensive collection makes it easy for both beginners and seasoned stargazers to find the best astronomy sites on the web.
http://drydredgers.org/
The Cincinnati Dry Dredgers claim the title of the oldest continuously-operating fossil club in North America, bringing together amateur geologists and fossil collectors in the Cincinnati area since their founding. The site features extensive fossil identification guides for trilobites, crinoids, echinoderms, brachiopods, and more, plus field trip photos, member activities, and resources for finding Ordovician-era fossils in the region.
http://andrewscom.com.au/
Andrews Communications is an Australian retailer specializing in marine radio, telescopes, binoculars, scanners, CB radio, and test equipment. The shop serves customers across Australia with a broad range of optical and electronic communication products.
https://kvarc.org/
The Kaw Valley Amateur Radio Club (KVARC), callsign W0CET, has been serving amateur radio operators in Topeka, Kansas since 1926. The site provides club members and prospective hams with meeting schedules, repeater information, licensing education resources, newsletters, and event calendars.
http://dxing.info/introduction.dx
DXing.info, created by Mika Mäkeläinen, is a comprehensive guide to the hobby of DXing, the practice of listening to distant and foreign radio stations far outside their normal coverage areas. The site covers equipment, propagation, a DX glossary, expedition logs from countries like Australia, Finland, and South Africa, and audio samples of rare distant broadcasts.
https://www.qsl.net/k4gc
K4GC Bryan's amateur radio page focuses on the art of building homebrew transmitters and receivers, showcasing projects like a 6L6 tube transmitter. Bryan shares his passion for collecting hard-to-find vintage radio parts including tube sockets, variable capacitors, and boat anchor components accumulated over more than twenty years.
http://leregne.chez.com/
Le Regne Mineral is a French bimonthly mineralogy magazine covering earth sciences with original articles and high-quality mineral photography from renowned specialists like Jeff Scovil and Mick Cooper. Considered one of the top five mineral magazines in the world after four years of publication, it serves collectors, rockhounds, and mineralogy enthusiasts across Europe and beyond.