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://his.com/~jrusso/ham.html
Jim and Karen's joint ham radio page for callsigns W4KRN and K4JJR features their station setup, ham radio links, and a reference to the Dayton 2000 hamfest. The site also participates in the Amateur Radio Webring and includes a local weather widget for Warrenton, Virginia.
![This Dynamic Earth--Contents [USGS]](/screenshots/15975.webp)
https://pubs.usgs.gov/gip/dynamic/dynamic.html
Published by the U.S. Geological Survey, this online edition of 'This Dynamic Earth' offers a comprehensive exploration of plate tectonics, from historical perspectives to modern understanding of mantle plumes and unanswered geoscientific questions. Written by W. Jacquelyne Kious and Robert I. Tilling, it covers the full text of the original 1996 print book and links to interactive companion resources including maps of volcanoes, earthquakes, and crustal movements.
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.
http://johnbetts-fineminerals.com/
John Betts built this extraordinary virtual mineral museum housing over 194,000 photographs of more than 63,000 mineral specimens from localities around the world. With educational articles, field trip guides, searchable species and locality databases, and decades of collector expertise behind it, this site is an unparalleled reference for mineralogy enthusiasts.
https://hamexam.org/
HamExam.org has been helping aspiring ham radio operators pass their licensing exams since 2003, offering completely free practice tests and flash cards for Technician, General, and Extra class licenses. The site covers all current FCC question pools and includes account tracking so users can monitor their progress on problem areas.
https://radiojove.gsfc.nasa.gov/
NASA's Radio JOVE Project invites students, educators, and citizen scientists to observe and study solar and planetary radio emissions using affordable dipole antenna telescope kits they build themselves. The site offers detailed guides for constructing radio telescopes, downloadable spectrograph software, a data archive, educational materials, and a community map of active Radio JOVE teams around the world.
https://lcwo.net/
LCWO.net, created by Fabian Kurz (DJ5CW), is a comprehensive web-based platform for learning Morse code (CW) using the Koch method, with interactive exercises, progress tracking, and a global community of learners. The site features user highscores, forums, user groups, and multilingual support across dozens of languages, making it a go-to resource for ham radio operators worldwide.
http://srgclub.org/
Karl Shoemaker (AK2O) runs this ham radio resource dedicated to the SRG Club's 147.20 MHz repeater network covering Eastern Washington and Northern Idaho, with linking to Seattle. The site dives into technical repeater building topics including flat audio, operational amplifiers, PCB work, receiver audio boards, and repeater controllers.
https://fossilguy.com/
Run by Jayson Kowinsky, FossilGuy.com is a comprehensive guide to fossil hunting and paleontology featuring field trip reports, fossil identification sheets, prehistoric animal profiles, and interviews with professional paleontologists. With content spanning from Megalodon teeth to trilobites to dinosaur news, it's a richly detailed resource for both amateur collectors and serious paleo enthusiasts.
http://stormeffects.com/
Brian Morganti's StormEffects is a personal archive of storm chasing photography, nature landscapes, and severe weather experiences captured over many years. Visitors can browse storm photos, chase videos, chase summaries, and even astrophotography, making it a rich showcase of one enthusiast's passion for extreme weather.