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://phy6.org/stargaze/Sintro.htm
Created by Dr. David P. Stern, 'From Stargazers to Starships' is a comprehensive web-based textbook covering astronomy, Newtonian mechanics, the Sun, and spaceflight at a high school level. The site includes glossaries, timelines, Q&A sections, lesson plans, and supplementary materials for educators, making it a rich self-contained learning resource with a strong historical perspective.
https://marcclub.org/
The Montgomery Amateur Radio Club is the official web presence for a local ham radio club, bringing together amateur radio enthusiasts in the Montgomery area. The site serves as a hub for club information, though the page content is minimal at this snapshot.
http://wasser-wissen.de/index.html
Wasser-Wissen is a German-language internet portal dedicated to water and wastewater topics, featuring an A-Z encyclopedia, news, link directories, legal references, and resources on water management and environmental systems. The site covers everything from chemical elements relevant to water chemistry to sewage treatment plants, court rulings, dissertations, and international water management organizations.
http://davidmalin.com/fujii/fujii_index.html
A stunning image gallery showcasing the complete Akira Fujii and David Malin Images (DMI) collection of astrophotography, organized into categories including constellations, Milky Way, star trails, solar eclipses, comets, and aurorae. The collection features wide-field photographs of the southern sky taken from Australian observatories, capturing objects like the Southern Cross, Carina Nebula, and Comet McNaught with remarkable detail.
http://aprs.net/
Steve Dimse's site introduces APRS (Automatic Position Reporting System), a ham radio-based network for transmitting GPS position reports, weather data, and messages, with an interactive Java applet showing live amateur radio operator positions in South Florida. The site showcases Steve's own contribution to APRS: the internet gateway software (javAPRS) that bridges local ham radio packets to the web for real-time map display.
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://maps.seds.org/Const/const_family.html
Hosted on the SEDS (Students for the Exploration and Development of Space) server, this reference page catalogs the traditional constellation families of the night sky, grouping constellations like the Ursa Major family, the Zodiac, and the La Caille southern sky instruments. Each constellation entry links to deeper information, making it a useful guide for amateur stargazers learning to navigate the celestial sphere.
http://theastropages.com/glossary/index.htm
The @stro Pages is a comprehensive amateur astronomy resource featuring a full A-Z glossary of astronomical terms, astrophotos, articles, and an observer's log focused on the San Diego area. With sections covering telescope making, deep-sky objects, and a local astronomy calendar, it serves as a rich hub for stargazers of all experience levels.
https://www.qsl.net/oz1gmq/hamlinks.htm
A sprawling directory of ham radio operator homepages from around the world, maintained by OZ1GMQ and featuring hundreds of links to individual amateur radio stations, clubs, repeater listings, and related resources. Visitors will find connections to emergency preparedness groups like RACES and ARES, regional radio clubs, and a wide variety of personal ham radio pages spanning multiple countries and call signs.
https://www.qsl.net/fara
The Framingham Amateur Radio Association (FARA) ran this club hub for ham radio operators in the Framingham, Massachusetts area, featuring meeting schedules, flea market announcements, licensing events, and DX-pedition photos. A great snapshot of an active local amateur radio club from the early 2000s, complete with member callsigns, ARRL news feeds, and resources for newcomers seeking their first no-code license.