Thus this x-ray imaging technique is also known as a shadowgram
Unlike the 2-dimensional shadowgram
images of conventional systems, SBDX produces a direct digital image similar to the technique used in CT scanners.
For more than a quarter of a century Scotty delivered the annual Shadowgram
, a twilight talk at Stellafane, during which he'd discuss, among other things, the changing state of telescope making.
Lye's photograms were at the core of the exhibition: first, a series of comparatively modest works from around 1930, some of which had been included in the 1936 International Surrealist Exhibition in London, and second, a larger series of "shadowgrams
" made in New York in 1947.
Students will learn to make various types of hologram starting with single beam denisyuk and progressing onto shadowgrams
, master transfer rainbow transmission holograms and then working with the pulse laser.