Periodic Table s p d f Blocks. Periodic table is divided into four blocks, and elements are placed into these blocks based on the sub-shell in which their last electron enters. This classification divides the elements into four types s-, p-, d- and f- block elements.
It was during this visit that Ansel Adams took his first shot with his new Kodak Brownie Box camera. It highly fascinated him. In 1917, he returned alone to the National Park; this time equipped with a better camera and tripod. The visit intensified his interest in photography.
50% of the Creative Process Occurred in the Dark Room. Ansel Adams is well known for spending a whole day in the darkroom, just to produce one print. He pioneered the zone system, which we all loosely know today as burning and dodging.