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

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

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

This article was originally published with the title “Pyrheliometer, Element 61, and more” in Scientific American Magazine Vol. 166 No. 4 (April 1942), p. 170 ...