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

August 28, 2015 Add as a preferred source on Google Add as a preferred source on Google If you don’t have a compass on hand and need to draw a large circle, you can turn a few scrap pieces into a beam ...

A compass made of light promises to be more sensitive than anything in a Boy Scout’s wildest dreams. A light beam shot through a blob of rubidium atoms can directly and reliably measure the size and ...