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://astronomy-links.com/
Clark M. Thomas of Roanoke, VA has assembled a free, non-commercial collection of astronomy links organized to help stargazers at all experience levels discover resources, from deep sky databases and space telescope galleries to star party listings and homework help. Highlights include curated 'Best of the Best' picks, a newest-links section for returning visitors, and a broad sweep of resources covering Mars missions, the Messier catalog, observing clubs, and more.
http://insti.physics.sunysb.edu/~siegel/quack.html
A physics professor at SUNY Stony Brook takes aim at pseudoscience and scientific quackery, exploring the psychological and personality traits that lead people to reject well-established science like evolution, vaccination, and modern physics. The page is a sharp, witty critique of fringe theorists who show up insisting their ideas will overturn all known physics, drawing a careful distinction between bold legitimate scientists and true cranks.
https://www.qsl.net/kb9ocq/index.html
Dale Catron (KB9OCQ) built this ham radio personal page focused on the 2-meter band, featuring antenna specs, repeater information, and a dense collection of links covering equipment brands like Icom, Yaesu, Kenwood, and Alinco. The site also includes FCC rules, online practice exams, ARRL resources, and participation in multiple amateur radio webrings from the late 1990s.
https://www.qsl.net/wb1asl
WB1ASL's personal ham radio page dedicated to vintage 'boatanchor' radio equipment, featuring Rich's own collection including a Hammarlund HQ-170 and a Lil' LuLu prototype. The site also curates shortwave listening links including Glenn Hauser's World of Radio and DXing resources for radio enthusiasts.
https://www.qsl.net/k5wtx
K5WTX is the personal ham radio page of an Oklahoma City amateur operator and petroleum geologist with a callsign history dating back to 1973. The site covers vintage radio equipment collecting (Drake, Ten Tec, Hallicrafters), a collection of 50 antique telegraph 'bug' keys, weather station data, and Jeep trail exploration.
https://eskimo.com/~bgudgel
Bob Gudgel's personal homepage centers on his amateur radio identity as K7IQ, with links to the Puget Sound Repeater Group and interests in Pacific Northwest audio electronics history including TAPCO and other defunct companies. The page also touches on vintage telephone switching, solar energy, and local Seattle-area connections, making it a charming slice of old-web hobbyist culture.
https://h14s.p5r.org/2012/09/0x5f3759df.html
Christian Plesner Hansen's technical blog dives deep into the legendary fast inverse square root hack and its magic constant 0x5f3759df, tracing the algorithm's surprising history from Ardent Computer in the 1980s through SGI, 3dfx, and Quake III Arena. The post rigorously explains the underlying floating-point bit manipulation, generalizes the technique to arbitrary powers, and includes graphs and mathematical derivations that illuminate why this 'evil' hack actually works.
https://izw1.caltech.edu/ACE
The official homepage for NASA's Advanced Composition Explorer (ACE) spacecraft, hosted at Caltech, providing mission data, instrument specifications, and real-time solar wind readings. Visitors can access browse plots, science publications, press releases about cosmic ray research, and data from nine onboard instruments measuring solar and galactic particle composition.
http://djburnette.com/chasing
Dr. Dorian J. Burnette, a meteorology professor, documents his storm chasing expeditions dating back to 1997 with a detailed archive of chase logs organized by year. The site emphasizes scientific purpose, safety, and education, reflecting his practice of bringing students into the field to witness real atmospheric events firsthand.
https://khleedril.org/blog
Dale Mellor is a scientific computer programmer, mathematician, and physicist who writes accessible math explainers like his 'Baby Steps for Adults' series alongside posts about science fiction, Star Trek, fine art, and daily life. The blog covers a genuinely eclectic range of intellectual interests, with mathematics and computing forming the clear backbone of the content.