Science & Nature
1413 sites
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- Astronomy & Space (390)
- Chemistry (7)
- Earth Sciences (24)
- Biology (76)
- Physics (29)
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- Amateur Radio (681)
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https://eskimo.com/~oolon/paladin/index.html
The Paladin Contest Club is a casual amateur radio group centered around sharing a special club callsign for contests and mini-DXpeditions, with no formal score competition against other clubs. The site offers access to club bylaws, a member roster, contest scores, and logs, all coordinated by Jack Fleming (WA0RJY).
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://pages.mtu.edu/~jaszczak/graphite.html
John A. Jaszczak, a physicist at Michigan Technological University, has compiled a comprehensive reference on graphite mineralogy covering crystal structures, properties, spirals, spherical forms, and notable localities from around the world. The site features atomic force microscopy images, links to published research papers, and detailed documentation of unusual graphite occurrences including cones, pseudocubes, and meteoritic graphite.