Chemistry:Circled dot
From HandWiki
The circled dot, circumpunct, or circle with a point at its centre is an ancient symbol. It can represent:
- Solar system
- Solar symbol used to represent the Sun
- The sun / Gold (Alchemical symbols)
- The sun / Ra (Egyptian hieroglyphs)
- The sun / a day (Chinese oracle script, the modern character being 日)
- Religion and philosophy
- Language and linguistics
- Bilabial clicks ʘ (International Phonetic Alphabet) (Unicode IPA Extensions)
- Hwair 𐍈 (Gothic alphabet) (Unicode Gothic)
- Berber languages ⵙ ( Tifinagh Alphabet ) (Unicode Tifinagh)
- Tha 𑀣 (Brāhmī script) (Unicode Brahmi)
- Eye (Blissymbols)
- Fisheye ◉ (Unicode Geometric Shapes)
- A brief contact (brush) of the signing hand in SignWriting
- An indication of selected choice of radio buttons
- Mathematical Operator
- Hadamard product is the element wise multiplication of matrices of same size denoted by [math]\displaystyle{ A \odot B }[/math].
- Circled dot operator ⊙ (which represents the XNOR gate; Unicode Mathematical Operators), and n-ary circled dot operator ⨀ (Unicode Supplemental Mathematical Operators)
- Other uses
- A nazar is a circled-dot-shaped amulet believed to protect against the evil eye
- Center of pressure
- Mensuration sign for 98 meter 𝇇 (Unicode Musical Symbols)
- Used, or cancelled, stamp (philately)
- The trademark of the Target Corporation
- As a symbol of the phallus or nature's generative principle and of an Entered Apprentice Freemason[1]
- City centre (European road-signs)
- End of trail / End of the game. Gone home. (scouting)
- The Symbol of "Waterhole" (or a related concept) in Australian Aborigine Art
- In Germany it is symbol for a "Gestempelte Briefmarke" (canceled stamp), while a star means "postfrisch" (mint Stamp)
- In geometry, it is often the symbol for a circle
- In physics, it can be used to denote a vector facing out of the page
- In mathematics, especially in literature related to machine learning, it is used to denote element-wise multiplication
See also
- The Lost Symbol - a novel by Dan Brown that uses this symbol.
References
- ↑ Duncan, Malcom (1866). Duncan's Masonic Ritual and Monitor or Guide to the Three Symbolic Degrees of the Ancient York Rite, and the Degrees of Mark Master, Past Master, Most Excellent Master, and the Royal Arch. New York: Dick & Fitzgerald.
References
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