While humans have done a pretty good job of figuring out how to fly with various mechanical contrivances, the fact remains that our natural senses aren’t really well suited to being off the ground.

Lift. For a sailplane pilot it means the difference between a nice relaxing flight, or searching for an open area to land. Finding lift isn’t always easy though. This is especially true when the ...

Manufactured by Clapp-Eastham Company and used at station KDKA. A wooden case with two 10-position sweep switches on the side, Ground and Antenna connectors. A cylindrical coil with a single ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more.