Previous ImageNext Image Wolja Saraga’s proposal for a photo-electrical instrument in 1932 from the HHI archives Wolja Saraga’s proposal for a photo-electrical instrument in 1932 from the HHI archives Like this:Like Loading... Wolja Saraga’s proposal for a photo-electrical instrument in 1932 from the HHI archives Share this:Click to share on Facebook (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Twitter (Opens in new window)Like this:Like Loading...