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://azfreqcoord.org/
The Arizona Frequency Coordination Committee is the official body responsible for coordinating VHF and UHF repeater, digital, and point-to-point frequencies for amateur radio operators throughout Arizona. Run by volunteers under the Amateur Radio Council of Arizona, the site provides band plans, repeater listings, coordination policies, and application resources for ham radio operators in the region.
http://gothosenterprises.com/black_holes
Jillian's Guide to Black Holes is an informal yet thorough educational resource originally written as a university physics project at Syracuse University, covering black hole formation, classifications, accretion disks, Hawking radiation, wormholes, and how to locate black holes across the universe. Written by Jillian in an approachable, conversational style, it stands out for its careful citations, multilingual reach (including a Basque translation), and years of ongoing updates beyond its academic origins.
https://www.qsl.net/mid-islandarc
The Mid-Island Amateur Radio Club (MIARC) serves ham radio enthusiasts on Long Island, New York, with club info covering repeaters, membership applications, and Field Day photos. A community hub for local hams, the site also features a bulletin board, swap shop, and links to related resources including VE exam info and ARRL connections.
https://qsl.net/ve3bdb
The ORIGINAL Wireless Set No. 19 Group is a long-running online community dedicated to collectors and users of the WWII-era military radio known as the Wireless Set No. 19, active since 1997. Visitors can explore technical notes, photo galleries, a world inventory of surviving sets, history of the radio in Canadian service, and member submissions covering everything from operating tips to movie appearances.
http://assabfn.co.za/
The ASSA Bloemfontein Centre is a non-profit astronomy club based in Bloemfontein, South Africa, welcoming enthusiasts of all experience levels with interests ranging from astrophotography to telescope making. The site chronicles their annual Free State Star Party events spanning over a decade, shares resources including radio segments on stars and planets, and preserves local astronomical history such as the historic Lamont-Hussey Observatory.
https://w5ddl.org/
The Acadiana Amateur Radio Association (W5DDL) is a 501(c)3 nonprofit club based in Lafayette, Louisiana, serving the Acadiana region since 1953. The site provides club members and visitors with information on meetings, nets, emergency communications, repeaters, licensing exams, and membership details.
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://sbcb.bioch.ox.ac.uk/users/oliver/home.html
Oliver Beckstein's academic homepage showcases his computational biochemistry research at the intersection of physics and biology, covering topics like ion channel gating, membrane transport proteins, and molecular simulations. Hosted at the University of Oxford's Structural Bioinformatics and Computational Biochemistry Unit, the site links to publications, software, and his lab at Arizona State University's Center for Biological Physics.
https://princetonastronomy.org/
The Amateur Astronomers Association of Princeton (AAAP) is the official web presence for a New Jersey-based astronomy club bringing together hobbyists and enthusiasts to observe and explore the night sky together. Visitors can expect to find club meeting information, observing events, and resources for amateur stargazers of all experience levels.
https://metrocor.net/
MetroCor is the Metropolitan Coordination organization for amateur radio repeaters covering New York City, New Jersey, and surrounding counties, maintaining an extensive database of coordinated frequencies across bands from 10 meters through 23 centimeters. The site publishes detailed repeater coordination tables listing hundreds of callsigns, output and input frequencies, PL tones, and coordination status for the greater NYC metro area.