|
List Of Symbols
Many (but not all) graphemes that are part of a writing system that encodes a full spoken language are included in the Unicode standard, which also includes graphical symbols. See: * Language code * List of Unicode characters * List of writing systems * Punctuation * :Typographical symbols The remainder of this list focuses on graphemes not part of spoken language-encoding systems. Basic communication * — No symbol * Arrow (symbol) * Character * Emoji ** ☺ — Smiley * ✓ — checkmark (UK: tick) * Harvey balls * ☆ — Star (polygon) Scientific and engineering symbols * Alchemical symbols * Astronomical symbols ** Planet symbols * Chemical symbols * Electronic symbol (for circuit diagrams, etc.) * Engineering drawing symbols * Energy Systems Language * Hazard symbols * List of mathematical constants (typically letters and compound symbols) * Glossary of mathematical symbols * List of physical constants (typically letters and compound symbols) * List of common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grapheme
In linguistics, a grapheme is the smallest functional unit of a writing system. The word ''grapheme'' is derived and the suffix ''-eme'' by analogy with ''phoneme'' and other names of emic units. The study of graphemes is called '' graphemics''. The concept of graphemes is abstract and similar to the notion in computing of a character. By comparison, a specific shape that represents any particular grapheme in a given typeface is called a glyph. Conceptualization There are two main opposing grapheme concepts. In the so-called ''referential conception'', graphemes are interpreted as the smallest units of writing that correspond with sounds (more accurately phonemes). In this concept, the ''sh'' in the written English word ''shake'' would be a grapheme because it represents the phoneme /ʃ/. This referential concept is linked to the ''dependency hypothesis'' that claims that writing merely depicts speech. By contrast, the ''analogical concept'' defines graphemes analogou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Symbols
Astronomical symbols are abstract pictorial symbols used to represent astronomical objects, theoretical constructs and observational events in European astronomy. The earliest forms of these symbols appear in Greek papyrus texts of late antiquity. The Byzantine codices in which many Greek papyrus texts were preserved continued and extended the inventory of astronomical symbols. New symbols have been invented to represent many planets and minor planets discovered in the 18th to the 21st centuries. These symbols were once commonly used by professional astronomers, amateur astronomers, alchemists, and astrologers. While they are still commonly used in almanacs and astrological publications, their occurrence in published research and texts on astronomy is relatively infrequent, with some exceptions such as the Sun and Earth symbols appearing in astronomical constants, and certain zodiacal signs used to represent the solstices and equinoxes. Unicode has encoded many of these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Currency Sign
A currency symbol or currency sign is a graphic symbol used to denote a currency unit. Usually it is defined by the monetary authority, like the national central bank for the currency concerned. In formatting, the symbol can use various formattings: before, between or after the numeric amounts: , and , for example; this positioning is determined by national convention. The symbol is not defined or listed by ISO 4217: that only assigns three-letter codes to currencies (like for Azerbaijani manat) and special cases like gold and silver ( and respectively) that are used as financial instruments. Usage When writing currency amounts, the location of the symbol varies by language. Many currencies in English-speaking countries and Latin America (except Haiti) place it before the amount (e.g., R$50,00). The Cape Verdean escudo (like the Portuguese escudo, to which it was formerly pegged) places its symbol in the decimal separator position (e.g. 20$00). Banco de Cabo Verde.Moeda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caduceus As A Symbol Of Medicine
The caduceus (☤; ; la, cādūceus, from grc-gre, κηρύκειον "herald's wand, or staff") is the staff carried by Hermes in Greek mythology and consequently by Hermes Trismegistus in Greco-Egyptian mythology. The same staff was also borne by heralds in general, for example by Iris, the messenger of Hera. It is a short staff entwined by two serpents, sometimes surmounted by wings. In Roman iconography, it was often depicted being carried in the left hand of Mercury, the messenger of the gods. Some accounts suggest that the oldest known imagery of the caduceus has its roots in Mesopotamia with the Sumerian god Ningishzida; his symbol, a staff with two snakes intertwined around it, dates back to 4000 BC to 3000 BC. As a symbolic object, it represents Hermes (or the Roman Mercury), and by extension trades, occupations, or undertakings associated with the god. In later Antiquity, the caduceus provided the basis for the astrological symbol representing th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rod Of Asclepius
In Greek mythology, the Rod of Asclepius (⚕; grc, Ράβδος του Ασκληπιού, , sometimes also spelled Asklepios), also known as the Staff of Aesculapius and as the asklepian, is a serpent-entwined rod wielded by the Greek god Asclepius, a deity associated with healing and medicine. Theories have been proposed about the Greek origin of the symbol and its implications. In modern times, it is the predominant symbol for medicine and health care, although, because of a misunderstanding concerning ⚕ and ☤, the Caduceus (the symbol of commerce) is sometimes seen in this context, although both rods, from which these symbols represent, were each given to Asclepius and to Hermes by Apollo. Greek mythology and Greek society The Rod of Asclepius takes its name from the Greek god Asclepius, a deity associated with healing and medicinal arts in ancient Greek religion and mythology. Asclepius' attributes, the snake and the staff, sometimes depicted separately in antiq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Common Physics Notations
This is a list of common physical constants and variables, and their notations. Note that bold text indicates that the quantity is a vector. Latin characters Greek characters Other characters See also * List of letters used in mathematics and science * List of mathematical symbols * Latin letters used in mathematics * Greek letters used in mathematics, science, and engineering * Physical constant * Physical quantity * International System of Units * ISO 31 ISO 31 ( Quantities and units, International Organization for Standardization, 1992) is a superseded international standard concerning physical quantities, units of measurement, their interrrelationships and their presentation. It was revised and ... References {{DEFAULTSORT:List Of Common Physics Notations Common Physics Abbreviations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Physical Constants
The constants listed here are known values of physical constants expressed in SI units; that is, physical quantities that are generally believed to be universal in nature and thus are independent of the unit system in which they are measured. Many of these are redundant, in the sense that they obey a known relationship with other physical constants and can be determined from them. Table of physical constants Uncertainties While the values of the physical constants are independent of the system of units in use, each uncertainty as stated reflects our lack of knowledge of the corresponding value as expressed in SI units, and is strongly dependent on how those units are defined. For example, the atomic mass constant m_ is exactly known when expressed using the dalton (its value is exactly 1 Da), but the kilogram is not exactly known when using these units, the opposite of when expressing the same quantities using the kilogram. Technical constants Some of these constants ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Mathematical Symbols
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for expressing all mathematics. The most basic symbols are the decimal digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9), and the letters of the Latin alphabet. The decimal digits are used for representing numbers through the Hindu–Arabic numeral system. Historically, upper-case letters were used for representing points in geometry, and lower-case letters were used for variables and constants. Letters are used for representing many other sorts of mathematical objects. As the number of these sorts has remarkably increased in modern mathematics, the Greek alphabet and some Hebrew letters are also used. In mathematical formulas, the standard typeface is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mathematical Constants
A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. For example, the constant π may be defined as the ratio of the length of a circle's circumference to its diameter. The following list includes a decimal expansion and set containing each number, ordered by year of discovery. The column headings may be clicked to sort the table alphabetically, by decimal value, or by set. Explanations of the symbols in the right hand column can be found by clicking on them. List {, class="wikitable sortable" , - ! Name ! Symbol ! Decimal expansion ! Formula ! Year ! Set , - , One , 1 , 1 , , data-sort-value="-2000", Prehistory , data-sort-value="1", \mathbb{N} , - , Two , 2 , 2 , , data-sort-value="-2000", Prehistory , data-sort-value="1", \mathbb{N} , - , One half , 1/2 , data-sort-value="0.50000", 0. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hazard Symbol
Hazard symbols or warning symbols are recognisable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electric currents, poisons, and radioactivity. The use of hazard symbols is often regulated by law and directed by standards organizations. Hazard symbols may appear with different colors, backgrounds, borders, and supplemental information in order to specify the type of hazard and the level of threat (for example, toxicity classes). Warning symbols are used in many places in lieu of or addition to written warnings as they are quickly recognized (faster than reading a written warning) and more commonly understood (the same symbol can be recognized as having the same meaning to speakers of different languages). List of common symbols Tape with yellow and black diagonal stripes is commonly used as a generic hazard warning. This can be in the form of barricade tape, or as a self-adhesive tape for marking floor areas and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Systems Language
The Energy Systems Language, also referred to as Energese, Energy Circuit Language, or Generic Systems Symbols, is a modelling language used for composing energy flow diagrams in the field of systems ecology. It was developed by Howard T. Odum and colleagues in the 1950s during studies of the tropical forests funded by the United States Atomic Energy Commission. Design intent The design intent of the energy systems language was to facilitate the generic depiction of energy flows through any scale system while encompassing the laws of physics, and in particular, the laws of thermodynamics (see energy transformation for an example). In particular H.T. Odum aimed to produce a language which could facilitate the intellectual analysis, engineering synthesis and management of global systems such as the geobiosphere, and its many subsystems. Within this aim, H.T. Odum had a strong concern that many abstract mathematical models of such systems were not thermodynamically valid. Hence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineering Drawing Symbols
Engineering drawing abbreviations and symbols are used to communicate and detail the characteristics of an engineering drawing. This list includes abbreviations common to the vocabulary of people who work with engineering drawings in the manufacture and inspection of parts and assemblies. Technical standards exist to provide glossaries of abbreviations, acronyms, and symbols that may be found on engineering drawings. Many corporations have such standards, which define some terms and symbols specific to them; on the national and international level, ASME standard Y14.38. is one of the widely used standards. See also *Geometric dimensioning and tolerancing#Symbols, List of geometric dimensioning and tolerancing symbols References Bibliography Sources cited * * * Further reading External Links * {{Cite web, url=http://www.matweb.com/reference/abbreviations.aspx?cls=m, title=Engineering Materials Abbreviations and Acronyms, website=www.matweb.com, access-date=2018 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
