This instrument went to immediate use in the California citrus industry
and looks nothing like this today.
This instrument went to immediate use in the California citrus industry and looks nothing like this today. With its creation, the inventor, an assistant professor at Caltech, rethought his career in academia. So who knows the answer ? :)
Is it the original photovoltaic cell? (A complete guess without looking anything up - honest!)
ReplyDeleteNope..is not :)
ReplyDeleteIs just a pH meter ;)
ReplyDeleteSure beats litmus paper....
ReplyDeleteMicrofische
ReplyDelete