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://hamuniverse.com/hamnews.html
Hamuniverse.com aggregates the latest ham radio news from major worldwide sources including ARRL, QRZ.com, Southgate ARC, and Amateur Radio Newsline, all from a single convenient page. Part of a larger amateur radio resource site, this news hub keeps operators informed on contests, satellite activity, licensing, and club events happening across the global ham radio community.
https://ptable.com/
Ptable is a richly interactive periodic table created by Michael Dayah, offering property trend visualization, 3D orbital diagrams, isotope data, and compound mixing tools for all 118 elements. Available in dozens of languages and regularly updated, it serves as a go-to reference for students, educators, and chemistry enthusiasts alike.
http://amasci.com/amateur/elehob.html
Bill Beaty's Electronics Hobbyist page is a sprawling directory of resources for electronics enthusiasts, covering surplus suppliers, schematics archives, robotics, embedded processors, Tesla coils, and electrostatics projects. It also includes Bill's own articles on electricity fundamentals, common misconceptions, and hands-on science experiments, making it a rich hub for both beginners and seasoned hobbyists.
https://radiojove.gsfc.nasa.gov/library/newsletters/2008Dec
The December 2008 issue of The JOVE Bulletin covers NASA's Radio JOVE Project, a program enabling students and educators to build simple radio telescopes and observe solar and planetary radio emissions. Highlights include field reports of Jupiter radio storm observations, a gallery of radio spectrograms, and news about Radio-SkyPipe 2 software for amateur radio astronomy.
https://www2.mmm.ucar.edu/imagearchive
Hosted by UCAR's Mesoscale and Microscale Meteorology Laboratory, this archive provides a collection of meteorological case study images for researchers and forecasters. The Case Selection Kit Image Archive serves as a reference tool for selecting and studying atmospheric weather cases, making it a useful resource for those in the meteorological sciences.
http://big.or.jp/~jh4phw/index-e.html
The personal ham radio homepage of an operator holding multiple callsigns including JH4PHW, JA1CUF, WH0P, and 9V1PW, reflecting activity across Japan and other regions. The site offers links to amateur radio resources, a callbook lookup, and a Japanese ham radio web cluster.
https://www.qsl.net/mcarc
The Mayes County Amateur Radio Club (MCARC) serves northeast Oklahoma hams with three wide-area repeaters and hosts weekly nets on Thursday and Wednesday evenings. The site includes club officer info, bylaws, meeting schedules, and a Field Day 2016 YouTube video, making it a practical hub for local ham radio operators.
https://npl.washington.edu/AV/av_index_sub.html
John G. Cramer's subject index collects his long-running 'Alternate View' column from Analog Science Fiction & Fact Magazine, organizing hundreds of short essays on cutting-edge science into topics like quantum mechanics, cosmology, wormholes, and space drives. Running from 1984 to the present, this archive is a remarkable resource for hard SF readers and writers who want rigorous, accessible science writing from a working physicist.
http://sm0vpo.altervista.org/
Harry Lythall (SM0VPO/G4VVJ) shares an extensive collection of homebrew amateur radio construction projects, covering everything from QRP transmitters and receivers to circuit boards, oscillators, and RF amplifiers. The site is a treasure trove for hands-on ham radio enthusiasts, packed with schematics, datasheets, calculators, and practical guides for building your own radio equipment.
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.