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://audible.transient.net/archive
The Music Electronics µArchive is a long-running reference hub for DIY guitar effects and audio electronics, offering schematics archives, FAQs, and curated links to the best resources on the web. Highlights include a downloadable schematics archive, guides on tube amplifiers and transistor identification, and an Electro-Harmonix parts sheet for builders working with vintage pedal components.
https://casonline.org/
The Calumet Astronomical Society (CAS) maintains this site for their Indiana-based astronomy club, featuring information about the Conway Observatory, a monthly star chart, open house schedules, and meeting details at the Munster Library. Members and stargazers can find membership applications, donation options, and a photo gallery documenting the club's history and activities.
https://morahamradio.com/
The Mora Open Repeater Association (MORA) is an amateur radio club based in Mora, Minnesota, maintaining repeater systems on 147.240 MHz and 146.910 MHz for local operators. The site features repeater status updates, a club event calendar, newsletter headlines, and resources including a Tuesday Evening Net that is approaching its 10,000th check-in milestone.
http://mathematicalpoets.weebly.com/
A research project exploring the intersection of mathematics and poetry through a historical timeline tracing connections between mathematicians and poets across the centuries. The site offers a curated timeline, sources, and resources for anyone curious about how these two disciplines have influenced each other.
https://w4atc.ncsu.edu/
W4ATC is the Student Amateur Radio Society at NC State University, a club with over 90 years of history connecting students through the hobby of amateur radio. Visitors can explore the club's equipment archive, QSL information, moonbounce (EME) presentations, and details on joining the active campus radio community.
https://mushroomexpert.com/
MushroomExpert.Com, maintained by Michael Kuo, is a comprehensive reference covering over 1,300 mushroom species with detailed entries, identification keys, and photographs for each genus and species. It stands out as one of the most thorough free mycology databases on the web, covering everything from common yard fungi to rare and obscure species across North America.
http://bcfmca.bc.ca/
The British Columbia Frequency Modulation Communications Association (BCFMCA) is a registered Canadian amateur radio charity operating VHF, UHF, and microwave repeaters across British Columbia, including FM, DMR, IRLP, and D-STAR modes. Visitors can check live system status, explore the repeater directory, browse coverage maps, and find membership and donation information for this active ham radio club.
https://handprint.com/ASTRO/bortle.html
A detailed reference page explaining the Bortle Dark Sky Scale, which measures night sky light pollution across nine categories from inner-city skies to pristine darkness. The site includes an adapted table of Bortle's indicators with color codes used in light pollution maps, plus five star charts covering key sky areas visible from the continental United States.
https://eyesonjason.com/storm_chasing.html
Jason Searle, an optometrist and storm chaser, runs this hub dedicated to severe weather experiences, featuring a storm blog, video gallery, photographs, radar tools, and a storm glossary. It blends the thrill of firsthand storm chasing with practical resources for weather enthusiasts.
https://sites.google.com/site/kb3awq/W3AHS
KB3AWQ.com is the personal amateur radio site of John W. Springman III, centered on the W3AHS and KB3AWQ repeater link system serving Williamsport, Pennsylvania. The site documents the technical setup of multiple linked repeaters across VHF, UHF, and HF bands including Echolink, Allstarlink, and Raspberry Pi-based interconnects, along with repeater coverage maps, band conditions, and a live Lycoming County scanner feed.