photographic apparatus
61atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …
62Astronomy — • Divided into two main branches, astrometry and astrophysics; the former concerned with determining the places of the investigation of the heavenly bodies, the latter, with the investigation of their chemical and physical nature Catholic… …
63Revision of Vulgate — Revision of Vulgate † Catholic Encyclopedia ► Revision of Vulgate In the spring of 1907 the public press announced that Pius X had determined to begin preparations for a critical revision of the Latin Bible. The need for such a… …
64Nikola Tesla — Tesla, aged 37, 1893, photo by Sar …
65nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …
66Mihajlo Idvorski Pupin — Born October 4, 1858 …
67Bohr–Einstein debates — The Bohr–Einstein debates is a popular name given to what was actually a series of epistemological challenges presented by Albert Einstein against what has come to be called the standard or Copenhagen interpretation of quantum mechanics. Since… …
68Ministry for State Security (Soviet Union) — The Ministry of State Security (MGB) (Russian: Министерство государственной безопасности, Ministerstvo Gosudarstvennoi Bezopasnosti) was the name of Soviet secret police from 1946 to 1953. Contents 1 Origins of the MGB 2 Functions of the MGB 3… …
69Aperture — For other uses, see Aperture (disambiguation). f stops demonstrated on a lens …
70George Eastman — Infobox Person name = George Eastman image size = 200px caption = birth date = Birth date|1854|7|12 birth place = death date = Death date|1932|3|14 (aged 77) death place = resting place = Ashes Buried at Kodak Park other names = known for =… …
