focusing by diffraction
101F-number — In optics, the f number (sometimes called focal ratio, f ratio, or relative aperture [Smith, Warren Modern Lens Design 2005 McGraw Hill] ) of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens; …
102Large Hadron Collider — LHC redirects here. For other uses, see LHC (disambiguation). Coordinates: 46°14′N 06°03′E / 46.233°N 6.05°E / 46.233; 6.05 …
103Time-of-flight — The time of flight (TOF) describes the method used to measure the time that it takes for a particle, object or stream to reach a detector while traveling over a known distance. In time of flight mass spectrometry, ions are accelerated by an… …
104List of film topics — This is a list of film related topics. National cinemas | glossary | Lists... | genres/plots | personnel | details | success | recognition | links | geography | other | see also National and regional cinemas: *African Cinema *Cinema of Albania… …
105Secondary mirror — A secondary mirror (or secondary) is a second light gathering and focusing surface in a reflector telescope. Light gathered by the primary mirror is directed towards a focal point typically past the location of the secondary. The secondary… …
106Beamline — In particle physics, a beamline is the line in a linear accelerator along which a beam of particles travels. It may also refer to the line of travel within a bending section such as a storage ring or cyclotron.In materials science, physics,… …
107Gordon Gould — in 1940 Born July 17, 1920 New York City …
108Great Observatories program — Four Great Observatories satellites NASA s series of Great Observatories satellites are four large, powerful space based telescopes. Each of the Great Observatories has had a similar size and cost at program outset, and each has made a… …
109Focus (optics) — An image that is partially in focus, but mostly out of focus in varying degrees. In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge.[1] Although the focus is… …
110Gopalasamudram Narayana Iyer Ramachandran — (8 October, 1922 7 April, 2001) is widely acknowledged as one of the most important Indian scientists of the 20th century, best known for his work that led to his creation of the Ramachandran plot for understanding peptide structure. He also made …
