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://web.ticino.com/wlog2000/wlog
WLOG2000 is a ham radio logbook software project by Swiss operator HB9OAB, offering a professional Windows-compatible logging application for amateur radio, CB, SWL, and BCL operators. The site features software downloads, Yaesu transceiver reviews, DXpedition logs, and the WASL Lakes Award program, making it a rich resource for the ham radio community.
http://chaos.umd.edu/
The Chaos Group at the University of Maryland presents their research into chaotic dynamics, covering topics like fractal basin boundaries, chaotic scattering, strange attractors, and controlling chaos. Affiliated with multiple departments including Physics, Mathematics, and Electrical Engineering, this site offers a window into decades of groundbreaking nonlinear dynamics research dating back to the mid-1970s.
http://sk3bg.se/contest
SM3CER Contest Service, run by Jan-Eric Rehn of Sweden, is a comprehensive hub for amateur radio contesters featuring a worldwide contest calendar, contest rules, results, and software links. Active since 1997, the site aggregates mailing lists, DX spotting tools, callsign lookups, and contest-related resources that make it an indispensable reference for serious ham radio operators.
https://mathwomen.agnesscott.org/women/women.htm
Hosted by Agnes Scott College, this site offers an extensive collection of biographical essays on women mathematicians throughout history, organized alphabetically, chronologically, and even by birthplace with an interactive Google Map. It also tracks prizes, firsts, and current achievements, making it a rich reference for anyone interested in the history of women in mathematics.
https://www.radioing.com/
Radioing.com, created by Charlie Bautsch (W5AM), is a sprawling amateur radio network covering everything from licensing guides and RF calculators to virtual museums of classic Collins Radio equipment and vintage transceivers. With over 4,000 ham radio links, callsign search tools, Morse code resources, classified ads, and a remote station, this site is a comprehensive hub for both newcomers and seasoned hams.
http://neofoundation.org/astrolabe
The Astrolabe Astronomy Club is a local amateur astronomy club based in Wheeling, WV, offering information on membership, meetings, and events for stargazing enthusiasts. Created by Pat Plunkett, this early-2000s club site serves as a community hub for sky watchers in the West Virginia area.
http://eveandersson.com/pi
Pi Land is Eve Andersson's comprehensive tribute to the mathematical constant pi, featuring trivia games, a memory trainer, digit search tools, frequency analysis, and multiple calculation methods including Gregory-Leibniz and Monte Carlo. The site blends nerdy exploration with aesthetic touches like poetry, photos, and art, making it a delightful destination for math enthusiasts of all levels.
https://www.qsl.net/ng3p
Gwen Patton (callsign NG3P) shares her journey into amateur radio, from childhood fascination with a massive Navy surplus shortwave receiver to earning her No-Code Technician license in 1999 and building an impressive shack. The site details her radio equipment including Yaesu, Alinco, and ICOM rigs, her QRP interests, and connects to ham radio webrings.
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.
http://sss-mag.com/eme.html
Part of the Spread Spectrum Scene (SSS Online) website, this page is a curated link directory focused on Earth-Moon-Earth (EME) moonbounce communications for ham radio operators. Visitors will find links to operator pages, equipment guides, activity loggers, and resources covering weak signal propagation, SETI, DSP, and related amateur radio topics.