Fr.: Système International
A coherent and rationalized system of units, in common use in physics since 1969. The seven basic units are the → meter, the → kilogram, the → second, the → ampere, the → kelvin, the → mole, and the → candela. Same as international system of units.
SI, from Fr. Système Internationale d'unités; → unit.
solar neutrino unit (SNU)
yekâ-ye notrinohâ-ye xoršidi
Fr.: unité de neutrinos solaires
A measure of the flux of neutrinos from the Sun reaching the Earth. 1 SNU is equal to 10-36 solar neutrinos captured per target atom per second.
yekâ (#), yekân (#)
A quantity or dimension adopted as a standard of measurement.
Back formation from → unity.
Yekâ, yekân, from yek, → one.
Fr.: vecteur unité
A vector of length 1, also called a direction vector.
→ unit + -ary.
goruh-e yekâyi, ~ yekâni
Fr.: groupe unitaire
The set of n × n unitary matrices (→ unitary matrix).
mâtris-e yekâyi, ~ yekâni
Fr.: matrice unitaire
A square matrix whose inverse equals its adjoint.
Fr.: opérateur unitaire
tarâdis-e yekâyi, ~ yekâni
Fr.: transformation unitaire
A transformation whose reciprocal is equal to its Hermitian conjugate.
To join, combine, or incorporate so as to form a single whole or unit.
M.E. uniten, from L. unitus, p.p. of unire "to unite," from unus, → one.
Formed by or resulting from the union of two or more persons or things.
P.p. of → unite.
The state or condition of being one.
M.E. unite, from O.Fr., from L. unitatem "oneness, sameness, agreement," from unus, → one.
Yeki, noun from yek, → one.