Quadrupole

From Fresh Dictionary

English

Noun

quadrupole

1. ((physics{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) a magnet with two north poles and two south poles, used to focus a beam of particles