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/scra
Stony Creek Amateur Radio (NC4FM) is a tax-exempt ham radio club based in Rocky Mount, North Carolina, founded in 2000 to mentor new operators, provide emergency communications, and participate in ARRL contests. The site covers repeater information, Field Day events, license testing, and local amateur radio organizations across the region.
http://skunkbayweather.com/
Skunk Bay Weather is a hyperlocal weather station site based in Hansville, Washington, offering live conditions updated every minute including temperature, wind speed, and rainfall data from multiple sensors. The site also features webcams, Northern Lights time-lapse videos, aurora forecasts, air quality links, and contributes data to Weather Underground and other meteorological organizations.
http://crystalinks.com/precession.html
Crystalinks explores the precession of the equinoxes and the Age of Aquarius, weaving together astronomy, ancient civilizations, and esoteric symbolism into a single reference page. Visitors will find discussions of the North Pole Star Thuban, the Great Sphinx, Draco constellation, Milankovitch cycles, and the significance of sidereal years across ancient cultures.
http://nationalcurvebank.org/
The National Curve Bank is a mathematical archive dedicated to cataloging and exploring curves, offering detailed information on their properties, equations, and historical significance. A sister site to the Witch of Agnesi page, this project serves as an educational reference for students, educators, and math enthusiasts interested in the geometry of curves.
https://faraday.physics.utoronto.ca/GeneralInterest/Harrison/Flash
Created by a University of Toronto physicist, this collection features 99 Flash animations covering topics from Quantum Mechanics and Relativity to Chaos and Fluid Mechanics, making abstract physics concepts visually intuitive. A bonus tutorial teaches how to build your own physics animations in Flash, and the animations are available in multiple languages under a Creative Commons license.
https://yb0ah.tripod.com/
H.K. Ardiwinata (YB0AH) built this Indonesian amateur radio resource covering homebrew electronics, circuit diagrams, and equipment manuals collected from personal experience and other ham radio sites. It features sections on basic electronics, ham equipment manuals, and electronics circuit diagrams, making it a useful reference for Indonesian ham radio enthusiasts.
https://www.qsl.net/vu2msy/LINKS.htm
Compiled by Sandeep Baruah (VU2MSY/VU2MUE), this page catalogs over 200 ham radio links spanning Indian amateur radio clubs, international organizations like IARU and ARRL, digital communication software, antenna resources, and QRP homebrewing sites. It offers a particularly strong focus on the Indian amateur radio community, including regional clubs in Bangalore, New Delhi, and Gujarat, making it a useful snapshot of the early-2000s ham radio web.
https://mainearrl.org/
The official Maine Section page for the American Radio Relay League covers everything local hams need, including district info, repeater listings, emergency communications nets, and an upcoming hamfest convention in Augusta. Resources for mentors (Elmers), club listings, EMCOMM testing, and multiple nets like the Maine Seagull Net and Maine Public Service Net make this a practical hub for amateur radio operators across the state.
http://rvasclub.org/
The Roanoke Valley Astronomical Society (RVAS) is a Virginia-based astronomy club offering monthly meetings, observing sessions, newsletters, and astrophotography resources for members. The site includes clear sky charts, a DSO of the month feature, member pages, and meeting announcements with guest speakers covering topics like astrophotography techniques.
http://mesoscale.ws/
Eric Nguyen's personal meteorology site documents his storm chasing experiences, tornado photography, and forecasting work as a University of Oklahoma School of Meteorology graduate. The site features storm documentation reports, dramatic weather photography including tornadic supercells, and serves as a lasting tribute to Eric, who passed away in 2007.