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://pembsbirds.blogspot.com/
Pembrokeshire Birds is a long-running blog dedicated to birdwatching observations across Pembrokeshire, Wales, covering sightings from notable sites like Skokholm Island and Teifi Marshes. With records dating back to 2008, annual reports, species lists, and detailed field notes, it serves as a rich regional ornithological resource for birders interested in Welsh wildlife.
https://thevenustransit.com/
Run by Gadi Eidelheit, this astronomy blog covers celestial events like Venus transits, solar perihelion, lunar phases, and space missions with original photography. The site is a rich mix of observational astronomy and astrophotography, with an impressive archive of posts and labels spanning planets, eclipses, satellites, and even the Israeli Beresheet lunar mission.
http://skytour.homestead.com/
Wes's astronomy hub, active since 1995, offers a rich collection of observing logs, sketch galleries, comet documentation, meteor shower reports, and essays drawn from decades of visual astronomy with a 10-inch Dobsonian telescope. Highlights include extensive Oregon Star Party trip reports spanning nearly two decades, comet scrapbooks for Hale-Bopp and Hyakutake, and thoughtful amateur astronomy essays that range from beginner telescope guides to celestial measurement explanations.
http://bas-astro.com/
BAS Astro appears to be an astronomy club or society website, with the domain name strongly suggesting a regional or local astronomical association. The site likely serves as a hub for amateur astronomers to share observations, events, and resources.
http://vectorbd.com/sw_review.html
Compiled by John Lloyd (KE4UTX), this site collects shortwave receiver reviews submitted by readers of the Rec.radio.shortwave newsgroup, covering dozens of models from brands like Sony, Grundig, Icom, Kenwood, and Sangean. Each review includes pricing, dimensions, and hands-on user impressions, making it a practical reference for shortwave enthusiasts comparing receivers.
https://www.qsl.net/oe7cwj
Christian Wieser's amateur radio page, hosted on QSL.net under the callsign OE7CWJ, appears to be a minimal personal station page that redirects visitors to a new site at qsl.net/oe3cwj. The QSL.net domain and Austrian callsign prefix make clear this belongs to a licensed ham radio operator from the OE (Austria) region.
http://flashwebhost.com/tcvr
Created by VU3PRX, this site provides detailed circuit diagrams and construction guides for a 7MHz SSB transceiver built around the MC1496 integrated circuit. The project covers every stage from VFO and ladder filters to power amplifiers and antenna design, making it a practical reference for hams looking to build their own HF radio from scratch.
https://julianbunn.org/
Julian Bunn is a computational scientist at Caltech with a background in particle physics at CERN, DESY, and the Rutherford Appleton Laboratory, now working on seismology and earthquake early warning systems like ShakeAlert. His sprawling homepage serves as a personal aide-memoire covering decades of scientific work, publications, ham radio, genetic algorithms, and even obscure retro computing projects from the DECUS era.
https://qsl.net/a/aa6j//radiomb
Created by AA6J Bill Jeffrey, an Assistant Scoutmaster and Merit Badge Counselor from San Diego, this site provides study notes and guidance to help Boy Scouts earn the Radio Merit Badge without needing a ham license or Morse code knowledge. It covers all eight requirements for the badge and includes links to additional resources, updated for the 2002 BSA requirements.
https://kvarc.org/
The Kaw Valley Amateur Radio Club (KVARC), callsign W0CET, has been serving amateur radio operators in Topeka, Kansas since 1926. The site provides club members and prospective hams with meeting schedules, repeater information, licensing education resources, newsletters, and event calendars.