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“radius”
radius (s), radii (pl)
This entry is located in the following unit:
radio-, radi-, rad-
(page 3)
(Modern Latin: from Latin radius, meaning “ray”, because of its intense radioactivity; radioactive metal)
(Latin: ray, radiating [the Latin word for the spokes of a wheel is radius]; spoke, staff, rod)
Word Entries containing the term:
“radius”
electron radius
The classical value of the radius of an electron which is obtained by equating the rest-mass energy of the electron to its electrostatic self-energy.
This entry is located in the following unit:
electro-, electr-, electri-
(page 51)
electrostatic radius
The nuclear radius as determined from an analysis of nuclear binding energies; especially, of mirror nuclides or species of atoms characterized by the number of protons, number of neutrons, and energy content in the nucleus.
This entry is located in the following unit:
electro-, electr-, electri-
(page 84)
ionic radius, ionic radii
1. In physical chemistry, a measure used to determine the effective range of an ion in a compound, commonly based on the sum of the radii of a pair of oppositely charged ions in a crystal.
2. Radii which can be assigned to ions because the rapid variation of their repulsive interaction with distance makes them repel like hard spheres.
2. Radii which can be assigned to ions because the rapid variation of their repulsive interaction with distance makes them repel like hard spheres.
These radii determine the dimensions of ionic crystals.
This entry is located in the following unit:
ion, ion- +
(page 5)
Word Entries at Get Words:
“radius”
radius
The distance between the center of a circle and any point on the circle's circumference.
This entry is located in the following unit:
Measurements and Mathematics Terms
(page 8)