For those interested in scientific antiques, scientists at Lawrence Livermore National Laboratory (LLNL) recently released a detailed, super-high resolution retro electromagnetic radiation infographic online.
Designed by W.M. Welch Scientific Company in 1944, the “Chart of Electromagnetic Radiations” depicts the entire electromagnetic spectrum and covers the properties, uses, and effects of each type of electromagnetic waves; it was discovered in the back of an unused office and now hangs framed in a hallway at the LLNL.
A 10,000 x 6,958 pixel 107MB JPG file of this image is available on LLNL’s Flickr page here.
Dennis Bangham says
For an interesting look at old measurements done by the Air Force, look into the charts inside Air Foce Design Handbook DH-4-1. At a certain frequency a chicken will extend its wings.
Mark Reyes says
Here it is in a photo of a 1940’s physics class at Citrus College.