Chapter O: O OZ

O

oxygen (element)

obtuse angle

an angle larger than 90 and less than 180 .

OCTAGON SECTION

where

a, h, x, y	= dimensions, in.
A	= cross-sectional area, in. 2
cg	= center of gravity
I AA, I BB	= moment of inertia, in. 4
k AA, k BB	= radius of gyration, in.
Z AA, Z BB	= section modulus, in. 3

• area,

  

• center of gravity (cg),

  

• distance,

  

• moment of inertia,

  

• radius of gyration,

  

• section modulus,

  

oersted

metric unit for magnetizing force or magnetic field intensity in the electromagnetic system.

oersted =

0.0796 abampere-turn/cm	79.577 A-turns/m
0.796 A-turn/cm	1 Gb/cm
2.021 A-turns/in.	3 E + 10 statoersteds

ohm

ohm =

1 E + 09 abohms	1 E + 06 microhms
1 E ? 06 megohm	1.113 E ? 12 statohm
1/mho

See also ELECTRICAL.

ohm (centimeter cube)

See also ohm-centimeter; ohm/centimeter cube; ohm-centimeter cube; ohm (centimeter cube).

ohm (circular mil-foot)

See also ohm-mil/foot; circular mil-ohm/foot; mil-ohm-foot; ohm (circular mil-foot); ohm (mil-foot); ohm/mil-foot; ohm-mil-foot.

ohm/centimeter cube

See also ohm-centimeter; ohm/centimeter cube; ohm-centimeter cube; ohm (centimeter cube).

ohm/inch cube

See also ohm-inch; ohm/inch cube; ohm (in cube); ohm-inch cube.

ohm/meter cube

See also ohm-meter; ohm/meter cube; ohm (meter cube); ohm-meter cube.

ohm/mile pound

See also ohm-pound/mile; ohm/mile-pound; ohm (mile-pound).

ohm/mil-foot

See also ohm-mil/foot; circular mil-ohm/foot; mil-ohm-foot; ohm (circular mil-foot); ohm (mil-foot); ohm/mil-foot; ohm-mil-foot.

ohm-centimeter; ohm/centimeter cube; ohm-centimeter cube; ohm (centimeter cube)

metric unit of electrical resistivity in ohms per centimeter...