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.
ANSEL ADAMS BIOGRAPHY. Ansel Adams, photographer and environmentalist, was born in San Francisco, California, the son of Charles Hitchcock Adams, a businessman, and Olive Bray. The grandson of a wealthy timber baron, Adams grew up in a house set amid the sand dunes of the Golden Gate.