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://qsl.net/vqs
The Virginia QRP Society (W4VQS) is a free amateur radio club focused on QRP low-power operation, welcoming members without any membership fees. Maintained by webmaster Jeff (K4JTN), the site offers club information and links for Virginia-area ham radio enthusiasts interested in low-power communications.
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.
http://wxqa.com/
The Citizen Weather Observer Program (CWOP) is a public-private partnership that collects weather data from over 7,000 citizen-operated stations across North America, feeding real-time observations to NOAA and dozens of government agencies. Visitors can join the network, check data quality, view maps and displays, and access resources for setting up their own personal weather stations.
https://kc4gzx.tripod.com/kc4gzx/rptga02m.htm
KC4GZX is a comprehensive ham radio resource covering Georgia 2-meter repeater directories, with listings extending across neighboring states including South Carolina, North Carolina, Tennessee, Alabama, and Florida. The site also features a Northeast Georgia ham operator directory organized by city, DIY electronics projects covering antennas, amplifiers, transmitters, and test equipment, plus a hamfest schedule.
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://twiar.org/
This Week in Amateur Radio (TWIAR) is a long-running news service delivering up-to-the-minute ham radio news via amateur repeaters, HF, shortwave, LPFM, and podcasting. Produced by Community Video Associates, Inc., it covers the latest developments in amateur radio technology, DX, satellites, and more, supported by listener donations.
https://radio-ware.com/
Radioware is a hobbyist catalog and bookstore supplying antennas, cables, and accessories to amateur radio, scanner, and shortwave listeners. It serves as a one-stop shop for radio enthusiasts looking for gear spanning ham radio, CB, and SWL equipment.
http://astrometry.org/
Astrometry.org is an educational resource by Istituto Scientia dedicated to popularizing astrometry and celestial mechanics, two of astronomy's oldest classical branches. Visitors can explore topics like star positions, orbital mechanics, the SAO star catalog, and an online planetarium, with historical context tracing these sciences from ancient Greece through Galileo and Newton.
https://gb.nrao.edu/~rmaddale/Education/OrionTourCenter/index.htm
Created by Ronald J. Maddalena of the National Radio Astronomy Observatory, this interactive tour guides visitors through the Orion constellation using five images captured at different wavelengths including optical, infrared, and radio. Visitors can explore astronomical objects in Orion, learn the mythology behind the hunter, take a glossary-supported test, and see how the same region of sky looks dramatically different depending on the telescope used.
http://spaceshipone.airshowjournal.com/2004
Fred Bruenjes documents his firsthand experience photographing the historic June 21, 2004 launch of SpaceShipOne, the first privately funded spacecraft to reach space, at Mojave Airport. The site is part of a larger airshow journal covering dozens of air shows across California and beyond, featuring hundreds of original photos from events ranging from Miramar to Oshkosh.