ket

名词 n.
中文释义

英文释义

名词 n.
  1. A column vector, in Hilbert space, especially as representing the state of a quantum mechanical system; the complex conjugate transpose of a bra (a row vector); a ket vector. Symbolised by |...〉.
    — A particular ket, say #124;A#92;rangle, might be represented by a particular column vector. Its corresponding bra, #92;langleA#124;, would then be represented by the row vector which is the transpose conjugate of that column vector.
  2. Carrion; any filth. Northern-England,countable,uncountable
  3. ketamine colloquial,uncountable
  4. matted wool Scotland,uncountable
  5. Sweetmeats. Northumbria,countable,uncountable
  6. A sweet, treat or candy. Wearside,countable,uncountable

词形变化

kets plural kets plural

词汇关系

反义词
bra

词源

词源 1
From bra-ket notation invented by Paul Dirac, from bracket.
词源 2
Probably of Old Norse origin like kjǫt (“meat”), from Proto-Germanic *ketwą.
Compare Icelandic kjöt (“flesh”); akin to Swedish kött, Danish kød, and Norwegian kjøtt. The use of the term ket for "candy" or "sweets" probably derived from its use to describe sweet meats or as a deterrent to children.
词源 3
Clipping of ketamine.
0 次浏览 数据来源: Wiktionary