Reposted by Justin Vasel
Justin Vasel
@justinvasel.xyz
450 followers 268 following 2.1K posts
Physics Ph.D. Supernova hunter. Air Force space operational energy analyst. Chair of the Bloomington Commission on Sustainability and Resilience. IU Alumn. HAM radio KE9DTH.
![Comic: Modern Spectrum Allocation Chart. [Long line of rectangles of different widths in shades of gray. From top to bottom: radio (shouting), TV test patterns, 1G cellular, radio (music), radio (static), reserved for zeppelin navigation, TV channels 2, 5, 7-13, 16, 17, and 28 with 2G cellular in between, interference, WKRP in Cincinnati, spaceship beeps, all other TV, car dealership ads, numbers stations, weather balloons, amateur radio, HAM radio, “weather balloons”, *Choosing Texas* 24/7, [extra large rectangle] boat captains say they need this for something and we don’t ask what because they’re scary, the secret radio waves that make planes stay up, defunct satellite phone company, radioastronomy, radioastrology, [extra small rectangle] all modern wireless infrastructure, death rays, LoFi hip hop beats to relax/study to, security guard walkie talkies, amateur military satellites, left open in case aliens try to call, one brand of garage door openers with a lot of political pull.]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreia2bf2xxisooyebdz5dhcagzlu2dmwatby3jjhkpug2ufgmkd4jra)
![Comic. [Two people flailing high in the air. Three people on the ground running ahead of them. Arrows and a dotted line indicate that this second group is within roughly one body length of the surface.] [caption] The “ground effect” explains why sprinters can run most efficiently if they stay within roughly one body length of the surface.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreihcig3lsvbr35da6d4ylsw4wwdj2pzkrcplyvuot5tkx6siqxxfim)
![Comic. [A college building labeled “Department of Geology” with a diagonal slash through center making it look uneven.] [caption] The administration regretted giving the geology department free rein to design their new building.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreiauxqpr37ipybyyjkyqz2ykojtxsilvnahvvs7heo47ie2wm4nrve)
