praxis-, -praxsis, -praxia, -praxic, -praxi-

(Greek > Latin: to do, to exercise, doing; action, activity, practice; the opposite of theory; from the stem of prassein, "to do, to act")

zoopraxiscope (s),zoopraxiscopes (pl) (nouns)
A series of projected images of slides placed on a large disk and shown on a screen: "The lecturer used a zoopraxiscope so he could illustrate his lecture by showing animals in motion."

Eadweard Muybridge spent most of 1881-1882 in Paris and London exhibiting the zoopraxiscope and lecturing on animal motion.

The zoopraxiscope (pronounced ZOH uh PRAKS uh skohp), invented by British photographer Eadweard Muybridge and first shown in 1879, was a primitive version of the later motion picture devices which worked by showing a sequence of still photographs in rapid succession.

Muybridge, perhaps best known today for his sequence of photographs of a race horse in motion (which proved for the first time that at top speed all feet leave the ground), studied photography in the early 1860s with daguerrotypist Silas Selleck and later achieved recognition for his photographs of the Yosemite Valley and other scenes of the American Far West.

The zoopraxiscope emerged out of his studies of motion as shown in sequences of still photographs. His eleven-volume work, Animal Locomotion, published in 1887, contained over 100,000 photographs. In 1893, he lectured at "Zoopraxigraphical Hall" at the World's Columbian Exposition in Chicago.

The zoopraxiscope, along with the zoetrope and the thaumatrope, could be considered forerunners of today's motion display technologies (including the animated GIF and video display technologies such as streaming video), all of which create an effect of motion by presenting discrete but closely-related images one after the other.

zoopraxographist (s), zoopraxographists (pl) (nouns)
Someone who is a specialist in the subject of the way animals make progress from one position to another one: A zoopraxographist studies and records the various ways certain animals walk and run.
zoopraxography (s), zoopraxographies (pl) (nouns)
1. Locomotion of animals: Zoopraxography is the study of the way quadrupeds (four-footed animals) go from one place to another location.
2. The study and graphic descriptions of animal movements: Examples of zoopraxography include presentations of how animals move around.

Pointing to a page about zoopraxography. Origin of the word zoopraxography.