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://rainreport.com/
RainReport.com offers a way to track and measure rainfall data without needing on-site monitoring equipment or physically visiting your property. The service uses Doppler radar and related data to provide precise rainfall reports, making it a practical tool for homeowners, farmers, and anyone who needs to know when and how much rain fell at a specific location.
https://masatern.tripod.com/
KB1GLF's unofficial web presence for the Massachusetts chapter of the Salvation Army Team Emergency Radio Network (SATERN), a group of licensed amateur radio operators who provide emergency communications support during disasters. The site includes member lists, training resources, a calendar, event photos, and information about the weekly Friday night net on 145.23 MHz.
https://vvara.org/index.html
The Verde Valley Amateur Radio Association (VVARA) serves ham radio enthusiasts in north-central Arizona, providing club meeting schedules, net listings, repeater information, and foxhunt resources. Regular nets like the Knobby Knee Net and 60s Trivia Net reflect an active local community, and the site even includes a live weather camera feed from Mingus Mountain.
https://cosmotography.com/images/rc.html
R. Jay GaBany's Blackbird Observatory page details the technical setup behind his acclaimed astrophotography work, including a half-meter Ritchey-Chretien telescope, professional CCD cameras, and two remote observatory locations in New Mexico and the California Sierra Nevada. The site is a fascinating window into serious amateur deep-sky imaging, covering instrumentation, elevation advantages, and the evolution of the observatory from 2005 through 2014.
https://qsl.net/scoutradio
Scout Radio appears to be a site dedicated to amateur radio activities within the Scouting community, combining two classic youth and hobbyist traditions. The image-heavy layout and QSL.net hosting strongly suggest this is a ham radio club or station operated by or for Scout groups.
http://webmineral.com/
Webmineral is a comprehensive mineralogy database created by David Barthelmy, cataloging 4,714 individual mineral species with detailed descriptions, crystal structure viewers, X-ray data, chemical formulas, and an extensive image library. Its interactive Java-powered crystal viewers, searchable indexes across dozens of physical and optical properties, and multi-language support make it an invaluable reference for geologists, collectors, and mineral enthusiasts alike.
https://ac6v.com/
AC6V's Amateur Radio and DX Reference Guide is a massive archive built by Rod Dinkins (AC6V) covering 700 amateur radio topics across 133 pages and over 6,000 links. From antenna homebrew projects and propagation guides to licensing help and contest pages, this long-running site has been an essential reference for ham radio operators since 1997.
https://n5yk.tripod.com/
Randy Ashley (callsign N5YK) shares his personal homepage centered on amateur ham radio, with interests in contesting, 6 meter band, DXing, and RTTY operating from McAllen, Texas. The site also touches on his secondary hobbies of scuba diving and Dutch oven cooking, with links to local Rio Grande Valley ham radio clubs and related resources.
https://qsl.net/sv2ael/sv2ael.files/qsls_flags/qsl_flags1.htm
SV2AEL is a Greek amateur radio operator's gallery showcasing QSL cards and national flags organized alphabetically by DX country, complete with call sign prefixes, continents, and CQ zones. A comprehensive reference for ham radio enthusiasts interested in DX contacts and international QSL card collecting.
https://enolagaia.com/at.html
Dr. Randall Whitaker's Observer Web is a comprehensive academic resource dedicated to autopoiesis and enaction, covering the cognitive biology theories of Humberto Maturana and Francisco Varela. It offers a tutorial, study plan, bibliography, encyclopaedia, and internet guide for anyone exploring second-order cybernetics, radical constructivism, and enactive cognitive science.