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)
The Whole NGC
NEW!
http://astrosurf.com/benoit/ngc.html
A comprehensive index of the entire New General Catalogue (NGC), organized into batches of 100 objects spanning all 7,840 entries, created by an amateur astronomer named Benoit. This deep-sky reference resource gives stargazers and astronomy enthusiasts a structured way to browse every NGC object from galaxies and nebulae to star clusters.
http://rainreport.com/
RainReport.com offers a way to track and measure rainfall data without needing on-site monitoring equipment or physically visiting your property. The service uses Doppler radar and related data to provide precise rainfall reports, making it a practical tool for homeowners, farmers, and anyone who needs to know when and how much rain fell at a specific location.
https://www.qsl.net/in3vrr
Roberto Vendrame (IN3VRR) out of Bolzano, Italy offers LOGvrr, a freeware amateur radio logging suite featuring a logbook, international callbook with 1.8 million entries, and PacketCluster support. The site provides free downloads of the software in ARJ archives, ISO disc images, and supporting utilities for ham radio operators managing QSOs and LoTW confirmations.
https://cryothene.neocities.org/
Cryothene is a technically-minded personal blog covering electronics projects, embedded systems, reverse engineering, and 3D printing, with standout documentation of a custom display driver project called Sharpie spanning many installments. The site also mixes in anime opinions, game reviews, and occasional recipes, but the dominant draw is its detailed hardware and microcontroller writeups.
https://www.qsl.net/w8ea
The Licking County Contest Group (LCCG) is a club of amateur radio operators in Licking County, Ohio who gather around the competitive side of the hobby. The site links to contest resources like ARRL Contests and the KA9FOX DX Library, and serves as a memorial to longtime local ham Otto Geyer, W8EA.
https://astronomy-links.net/SETI_Battleship.html
Clark M. Thomas offers a witty essay examining the movie Battleship through the lens of real SETI science, exploring the plausibility and implications of contact with extraterrestrial civilizations. The piece weaves together astronomy, pop culture criticism, and philosophical musings about what our radio and TV signals might reveal to any alien observers.
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.
http://www.baltimoremd.com/qrpwebring
Created by Thom LaCosta (K3HRN), this is the hub page for the QRP Amateur Radio Web Ring, connecting low-power ham radio enthusiast sites across the web. Visitors can join the ring, edit their site entry, retrieve replacement HTML fragments, and browse the full ring layout.
https://princetonastronomy.org/
The Amateur Astronomers Association of Princeton (AAAP) is the official web presence for a New Jersey-based astronomy club bringing together hobbyists and enthusiasts to observe and explore the night sky together. Visitors can expect to find club meeting information, observing events, and resources for amateur stargazers of all experience levels.
https://www.qsl.net/i6ypk
I6YPK's workshop page showcases homebrew HF transceiver projects built in collaboration with I6WJB, including double and triple conversion designs covering 0-30 MHz continuous coverage. The site also features HP spectrum analyzer and frequency standard resources, making it a valuable technical reference for radio electronics builders.