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://jars.net/
The Johnston Amateur Radio Society (JARS) is a North Carolina-based ham radio club founded in 1975, serving members in the Johnston County area with a dedicated repeater on the AK4H frequency at 147.270 MHz. The site offers membership info, event listings, newsletters, a 'How to Become a HAM' guide, VE team details, and club history spanning over 40 years of amateur radio fellowship.
https://www.qsl.net/ps7ab
PS7AB is Rony's Brazilian amateur radio historical archive, dedicated to preserving the history of ham radio in the region. The page serves as a redirect to a Yahoo Geocities mirror, suggesting the main content lives at that now-defunct address.
https://w8lap.com/
The Lapeer County Amateur Radio Association (W8LAP) has served Lapeer County, Michigan since its founding in 1953, bringing together nearly 60 members for community service, emergency communications, and amateur radio operations. The site covers the club's repeater systems, ARES emergency services, SkyWarn weather spotting, membership info, newsletters, and licensing exam events.
http://cycloneroad.com/
Cyclone Road is the personal homepage of storm chaser Amos Magliocco, featuring chase reports, photos, a chase blog, and gear recommendations. The site includes a tribute to Eric Nguyen and links to essential storm chasing reading on safety, ethics, and tornado pursuit.
https://warc1.org/
The Wichita Amateur Radio Club (WARC) has been serving Kansas ham radio enthusiasts since 1932, making it one of the longer-running amateur radio clubs in the region. The site features news about Field Day operations, repeater information, licensing resources, and club activities including visits from Wichita's mayor during Amateur Radio Week.
http://www-k12.atmos.washington.edu/k12/grayskies
Hosted by the University of Washington's Atmospheric Sciences department, GRAYSKIES is an educational resource focused on Earth's atmosphere, offering climate data, rooftop weather observations, and curated links to Pacific Northwest weather and climate tools. Visitors can explore 30-year climate averages, satellite imagery, and data plotting tools alongside a broad collection of regional and national weather resources.
https://ncatlab.org/nlab/show/HomePage
The nLab is a collaborative wiki covering advanced mathematics, physics, and philosophy with a strong emphasis on category theory, homotopy theory, topos theory, and their connections to theoretical physics. It serves as an encyclopedic reference for researchers and students working at the intersection of higher mathematics and mathematical physics, offering thousands of deeply interlinked articles.
https://qsl.net/sv2ael/greekhamail.htm
Created by Greek amateur radio operator SV2AEL, this page is a comprehensive alphabetical directory of over 580 email addresses for licensed ham radio operators across Greece, organized by callsign prefix. A unique and practical reference for the Greek ham radio community, it covers all SV, SW, SX, and SZ callsign districts and is maintained as a personal initiative by Savas Pavlidis.
https://qsl.net/w4sat/antenna.htm
Antenna Elmer is a comprehensive ham radio antenna reference covering dipoles, folded dipoles, ground planes, beams, and vertical antennas for HF, VHF, and UHF frequencies. Visitors can design their own antennas using calculators and conversion tools, with guides covering coax efficiency, frequency scaling, and even a creative 'fan-tenna' built from a household fan.
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.