dipole

IPA: dˈaɪpoʊɫ

(physics) Any object (such as a magnet, polar molecule or antenna) that is oppositely charged at two points (or poles).
(chemistry) Any molecule or radical that has delocalised positive and negative charges.
(radio) A dipole antenna.

Examples of "dipole" in Sentences

The most familiar example of a dipole is a magnet.
If there is no external field we call the dipole permanent, written as pperm.
The slight magnetism of the rubidium atoms, called a dipole moment, may form the pattern, he says.
A common magnet has two poles and is called a dipole, one with four poles, a quadrupole, one with six, a hexapole etc.
This charge separation, called a dipole moment, wouldn't be strong enough to rip the wandering electron away from the giant atom.
The most common is what's called a dipole antenna, a good example being those T-shaped, plastic covered wires that came with home stereo sets once upon a time.
When working, the Galatea tows a device called a dipole transmitter that sends low-frequency electromagnetic signals through the sea floor toward a suspected reservoir.
I was especially proud of this one I got from South America (on a 40-meter dipole, which is the equivalent of getting Radio Free Europe through the braces in your mouth).
Another strategy was to create "electrochromic dyes" with large changes in dipole moment between ground and excited state, so that a change in neuronal membrane potential could shift the peak wavelengths of absorbance or fluorescence4.