number of Flickr users recognized this device, and one fellow even said he’d tried one out!
The thought-provoking image above was just one of the photographs added to our Mystery Photos album in the Library of Congress Flickr account, with the most recent batch all focused on some kind of contraption.
The amount of information located for the photo below by our diligent Flickr watchers was astounding, and all backed up with citations, photographs and other sources. We learned about both the man and the scientific gadget depicted, and the photo went from being wholly unidentified to having this detailed caption: [Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance]. See the comments to this photo in Flickr.
dental X-ray machine to determine if a golf ball’s core is centered. The collaborative research by Flickr users included: websites, digitized periodicals and newspapers, other Harris & Ewing photos and even an online auction site. And of course, the starting point was careful study of the photograph and a bit of educated guesswork to get the ball rolling, so to speak!
- See all 45 photos in the Mystery Photos set in Flickr, which include our first batch of mystery images as well as the latest ones.
- Revisit the Picture This post introducing the “What’s this Gadget?” set, which included a few mysteries of its own!
- Explore all of the solved mysteries in the Mystery Photos, and see if you have anything to add!
- Try your hand at the remaining mysteries under “What’s this Gadget?” and “What’s the Story?”
- Use the tools in the Researcher’s Toolbox on the Prints and Photographs Division website to learn how to interpret and identify photographs.