49 relations: Air-gap flash, Al-Biruni, Blinking, Compact disc, Copernicium, Day, Finger snapping, Flash (photography), Frequency, General relativity, Global Positioning System, Half-life, Hearing, Hertz, International System of Units, Jiffy (time), Kilometre, Light, Medium wave, Metre, Metric prefix, Microsecond, Mile, Millionth, Millisecond, Mu (letter), Muonium, Nanosecond, Opus Majus, Orders of magnitude (length), Orders of magnitude (time), Picosecond, Polonium, Refractive index, Roger Bacon, Sampling (signal processing), Satellite, Second, Shutter speed, Single-mode optical fiber, Speed of light, Strobe light, Telephone, Tidal acceleration, University of Pennsylvania Press, Vacuum, W. H. Allen, 2004 Indian Ocean earthquake and tsunami, 2011 Tōhoku earthquake and tsunami.
An air-gap flash is a photographic light source capable of producing sub-microsecond light flashes, allowing for (ultra) high-speed photography.
Abū Rayḥān Muḥammad ibn Aḥmad Al-Bīrūnī (Chorasmian/ابوریحان بیرونی Abū Rayḥān Bērōnī; New Persian: Abū Rayḥān Bīrūnī) (973–1050), known as Al-Biruni (البيروني) in English, was an IranianD.J. Boilot, "Al-Biruni (Beruni), Abu'l Rayhan Muhammad b. Ahmad", in Encyclopaedia of Islam (Leiden), New Ed., vol.1:1236–1238.
Blinking is a bodily function; it is a semi-autonomic rapid closing of the eyelid.
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982.
Copernicium is a synthetic chemical element with symbol Cn and atomic number 112.
A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun (solar day).
Snapping (or clicking) one's fingers is the act of creating a snapping or clicking sound with one's fingers.
A flash is a device used in photography producing a flash of artificial light (typically 1/1000 to 1/200 of a second) at a color temperature of about 5500 K to help illuminate a scene.
Frequency is the number of occurrences of a repeating event per unit of time.
General relativity (GR, also known as the general theory of relativity or GTR) is the geometric theory of gravitation published by Albert Einstein in 1915 and the current description of gravitation in modern physics.
The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Air Force.
Half-life (symbol t1⁄2) is the time required for a quantity to reduce to half its initial value.
Hearing, or auditory perception, is the ability to perceive sounds by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear.
The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.
The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.
Jiffy is an informal term for any unspecified short period of time, as in "I will be back in a jiffy".
The kilometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: km; or) or kilometer (American spelling) is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for). It is now the measurement unit used officially for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the road network of the United Kingdom where the statute mile is the official unit used.
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting.
The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in some metric systems, including the International System of Units (SI).
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or fraction of the unit.
A microsecond is an SI unit of time equal to one millionth (0.000001 or 10−6 or 1/1,000,000) of a second.
The mile is an English unit of length of linear measure equal to 5,280 feet, or 1,760 yards, and standardised as exactly 1,609.344 metres by international agreement in 1959.
One millionth is equal to 0.000 001, or 1 x 10−6 in scientific notation.
A millisecond (from milli- and second; symbol: ms) is a thousandth (0.001 or 10−3 or 1/1000) of a second.
Mu (uppercase Μ, lowercase μ; Ancient Greek μῦ, μι or μυ—both) or my is the 12th letter of the Greek alphabet.
Muonium is an exotic atom made up of an antimuon and an electron, which was discovered in 1960 by Vernon W. Hughes and is given the chemical symbol Mu.
A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, 1/1,000,000,000 of a second, or 10 seconds.
The Opus Majus (Latin for "Greater Work") is the most important work of Roger Bacon.
The following are examples of orders of magnitude for different lengths.
An order of magnitude of time is (usually) a decimal prefix or decimal order-of-magnitude quantity together with a base unit of time, like a microsecond or a million years.
A picosecond is an SI unit of time equal to 10−12 or 1/1,000,000,000,000 (one trillionth) of a second.
Polonium is a chemical element with symbol Po and atomic number 84.
In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.
Roger Bacon (Rogerus or Rogerius Baconus, Baconis, also Rogerus), also known by the scholastic accolade Doctor, was an English philosopher and Franciscan friar who placed considerable emphasis on the study of nature through empiricism.
In signal processing, sampling is the reduction of a continuous-time signal to a discrete-time signal.
In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit.
The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.
In photography, shutter speed or exposure time is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera's shutter is open when taking a photograph.
In fiber-optic communication, a single-mode optical fiber (SMF) is an optical fiber designed to carry light only directly down the fiber - the transverse mode.
The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.
A strobe light or stroboscopic lamp, commonly called a strobe, is a device used to produce regular flashes of light.
A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.
Tidal acceleration is an effect of the tidal forces between an orbiting natural satellite (e.g. the Moon), and the primary planet that it orbits (e.g. Earth).
The University of Pennsylvania Press (or Penn Press) is a university press affiliated with the University of Pennsylvania located in Philadelphia, Pennsylvania.
Vacuum is space devoid of matter.
William Herbert Allen (1863–1943) was a notable English landscape watercolour artist whose career spanned more than 50 years from the 1880s to the 1940s.
The 2004 Indian Ocean earthquake occurred at 00:58:53 UTC on 26 December with the epicentre off the west coast of Sumatra, Indonesia.
The was a magnitude 9.0–9.1 (Mw) undersea megathrust earthquake off the coast of Japan that occurred at 14:46 JST (05:46 UTC) on Friday 11 March 2011, with the epicentre approximately east of the Oshika Peninsula of Tōhoku and the hypocenter at an underwater depth of approximately.