A WWII-era patch for a US Navy punch-card officer. A gift from Grace Hopper to the Smithsonian.
An “image dissector tube” from the Farnsworth Pickup Camera, 1936. Via archive.org.
A lovely drawing of three different lampreys: the sea lamprey, lampern, and Planer’s lamprey. Drawing by Alexander Francis Lydon, 1878.
Weekends are for internet rabbit holes: watching Jurassic Park (for the millionth time) and discovering some really interesting research on how toads see. Above are stills from a video by researcher Jörg-Peter Ewert, testing how toad neurons react to various worm-like stimuli. (Warning, the video includes some images of lab animals.)
The pattern testing, and subsequent neural network, seem very relevant to computer vision work today (bonus for day-glo yellow too).
Chernoff faces showing multi-dimensional data in 2D: Google Quick Draw meets t-SNE, but from the 1970s. Via Tufte’s The Visual Display of Quantitative Information.