angular observation
111Jack Steinberger — Infobox Scientist name = Jack Steinberger box width = imagesize =150px caption = Jack Steinberger birth date = May 25, 1921 (age 87) birth place = Bad Kissingen nationality = Germany United States ethnicity = field = Physics known for = Discovery …
112Special Astrophysical Observatory of the Russian Academy of Science — The Special Astrophysical Observatory ( ru. Специальная Астрофизическая Обсерватория), or SAO RAS for short, is an astronomical observatory, set up in 1966 in the USSR, now operated by the Russian Academy of Sciences. Based in the Bolshoi… …
113Quadrant (instrument) — Ptolemy using a quadrant A quadrant is an instrument that is used to measure angles up to 90°. It was originally proposed by Ptolemy as a better kind of astrolabe.[1] Several different variations of the instrument were later produced by medieval… …
114microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …
115Carbon nanocone — SEM images of a carbon disk (top left image) and free standing hollow carbon nanocones produced by pyrolysis of heavy oil in the Kvaerner Carbon Black Hydrogen Process. Maximum diameter is about 1 micrometer.[1] …
116Angle — This article is about angles in geometry. For other uses, see Angle (disambiguation). Oblique angle redirects here. For the cinematographic technique, see Dutch angle. ∠, the angle symbol In geometry, an angle is the figure formed by two rays… …
117Eyepiece — For the device for looking through a camera, see viewfinder. A collection of different types of eyepieces. An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes. It is… …
118Magnetorotational instability — The magnetorotational instability or MRI is a fluid instability that arises when the angular velocity of a magnetized fluid decreases as the distance from the rotation center increases. It can also be known as the Velikhov Chandrasekhar… …
119Observational cosmology — Physical cosmology Universe · Big Bang …
120nervous 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… …
