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://n3wnb.tripod.com/
Tim Ingram (N3WNB) of Corry, PA built this ham radio page featuring a callsign lookup tool and a curated collection of links to resources like the ARRL, QRZ, and equipment suppliers. The site also highlights his Yaesu FT-847 rig and includes a local hams email list, giving it a personal community flavor alongside the standard reference links.
http://trafficwaves.org/
William J. Beaty, an electrical engineer from Seattle, explores the fascinating physics of traffic jams, treating highway congestion as fluid dynamics and demonstrating how a single driver can dissolve traffic waves. The site features animations, videos, experiments, and links to academic research on 'jam-absorption driving,' making it a surprisingly deep dive into an everyday phenomenon.
http://curiousskywatcher.blogspot.com/
The Curious Skywatcher is a dedicated astronomy blog offering monthly celestial highlights, including planet positions, meteor showers, and sky-watching tips for amateur stargazers. Posts guide readers on locating stars and planets with the naked eye, making it a friendly and practical resource for anyone wanting to explore the night sky.
http://bluemoon.net/~tgpauly
Tom's personal page, run by ham radio operator KB2DQ, centers on amateur radio and the Western District Net. A great find for ham radio enthusiasts interested in net operations and the community around them.
https://chris.org/
Chris Cox (N0UK/G4JEC) has maintained this personal homepage since 1993, making it one of the longer-running amateur radio personal sites on the web. Visitors will find a Maidenhead Grid Bearing and Distance Calculator, VHF/UHF contest logs, station details, and a much-requested curry recipe thrown in for good measure.
http://capella-observatory.com/
Capella Observatory documents an amateur astronomical observatory situated atop the Kupferberg in Namibia, near Windhoek, offering a rare southern-hemisphere observing perspective. The site features astrophotography and deep sky observations including nebulae, globular clusters, and open star clusters captured with a 60cm telescope.
https://jeff560.tripod.com/mathword.html
Jeff Miller's meticulously researched reference page tracks the earliest known uses of mathematical terminology, tracing when and where specific math words first appeared in historical texts. This is a unique etymological resource for mathematicians, historians, and anyone curious about the origins of the language of mathematics.
http://math2.org/
Math2.org is a comprehensive math reference site offering organized tables, formulas, and identities covering everything from basic arithmetic to calculus, linear algebra, and Fourier transforms. Available in both English and Spanish, it also features a message board for math questions and links to other top math resources on the web.
http://bbastrodesigns.com/
Mel Bartels runs this personal hub covering amateur telescope making alongside his BBAstroDesigns venture and beekeeping with top bar hives. The site blends hands-on astronomical craftsmanship with natural observations like ice spikes, sun rainbows, and sun pillars.
https://qsl.net/wa5mc
The Atchafalaya Amateur DX Association Inc. (AADXA) is a ham radio club based in Amelia, Louisiana, with a full organizational presence including officer listings, membership applications, meeting minutes, newsletters, and repeater information. Developed by Guy R. Morrison (WA5MC), the site also features field day photos, a guestbook, and club constitution documents, making it a solid hub for local amateur radio enthusiasts.