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://kusastro.kyoto-u.ac.jp/vsnet
VSNET is an international mailing list network based at Kyoto University dedicated to real-time alerts and collaborative observation of variable stars, cataclysmic variables, novae, supernovae, and X-ray binaries. Hosting decades of light curve archives from AFOEV observations and ongoing amateur-professional collaboration campaigns, it serves as a serious citizen science hub for variable star astronomy worldwide.
http://lakes.chebucto.org/ZOOBENTH/BENTHOS/benthos.html
A comprehensive scientific reference on freshwater benthic ecology and aquatic entomology, covering macroinvertebrate taxa from mayflies and dragonflies to beetles and caddisflies across dozens of detailed chapters. Produced by the Soil and Water Conservation Society of Metro Halifax, this site offers taxa tolerance values, biological monitoring protocols, and research reports focused on freshwater ecosystems in Nova Scotia and beyond.
http://g3pho.free-online.co.uk/microwaves
A hobbyist site dedicated to microwave frequencies above 1000MHz, inviting visitors to explore the upper reaches of the amateur radio spectrum. The site is part of the Amateur Radio World Ring webring, connecting enthusiasts focused on microwave and UHF/SHF band experimentation.
http://feraphotography.com/
Bob and Janice Fera share their passion for astrophotography on this dedicated site showcasing celestial images captured by the husband-and-wife team. Visitors can explore their collection of deep-sky and astronomical photographs, making it a compelling destination for amateur astronomy and night-sky imaging enthusiasts.
http://forrestmims.org/
Forrest M. Mims III is a prolific science author and self-taught scientist whose personal site documents decades of atmospheric research including UV-B measurements, volcanic aerosol tracking, and twilight photometry at Mauna Loa Observatory. With over 7.5 million books sold and a Rolex Award for science, Mims shares original scientific data, publications, and photography spanning solar radiation, dust layers, and environmental monitoring.
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://www.saao.ac.za/~wpk/astron.html
A comprehensive curated directory of astronomy links collected from mailing lists like ASTRO and HASTRO-L, covering everything from beginner stargazing tips to telescope making, satellite tracking, and the history of ancient calendars. Hosted on the South African Astronomical Observatory domain, this resource spans hundreds of links organized into detailed categories for amateur and serious astronomers alike.
https://centexastronomy.org/
The Central Texas Astronomical Society operates Meyer Observatory and the Turner Research Station near Clifton, Texas, hosting public open houses and member star parties with large-aperture telescopes. Their mission spans stargazing outreach, astrophotography, astronomy education, and research for both newcomers and experienced observers in the Central Texas region.
http://users.netonecom.net/~swordman/Radio/unun.htm
Doug's page details the hands-on construction and testing of an impedance-matching transformer (Unun) for connecting a 350-foot long-wire antenna to a shortwave receiver. Complete with photos of the wound toroid core, schematic references, and bandscanning results comparing performance with and without the transformer, it's a practical reference for anyone building receiving antenna accessories.
https://www.qsl.net/farc-sc
The FARC-SC (Frankfort Amateur Radio Club of South Carolina) hosts radio coverage maps and club resources for local ham radio enthusiasts. The site uses a frames-based layout typical of early 2000s web design, offering geographic signal coverage information relevant to the club's area.