1.
post-traumatic stress disorder
- Publication:
-
The Columbia Encyclopedia, 6th ed., 2013
Read now
...post-traumatic stress disorder (PTSD), mental disorder that...an occurrence of extreme psychological stress, such as that encountered in war or...hormone released during periods of extreme stress, may damage nerve fibers in the area......
2.
stress test
- Publication:
-
The Columbia Encyclopedia, 6th ed., 2013
Read now
...stress test or exercise electrocardiography, in medicine, a test that evaluates the performance of the heart by subjecting it to controlled amounts of physical stress. Such tests, which include walking on a treadmill, measure the heart......
6.
strength of materials
- Publication:
-
The Columbia Encyclopedia, 6th ed., 2013
Read now
......wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by one part of an elastic...deformation or change in dimension occasioned by stress. When a body is subjected to pull, it is said to......
7.
elasticity
- Publication:
-
The Columbia Encyclopedia, 6th ed., 2013
Read now
......body to resist a distorting influence or stress and to return to its original size and shape when the stress is removed. All solids are elastic for...enough deformations or strains, but if the stress exceeds a certain amount known as the elastic......
8.
accent
- Publication:
-
The Columbia Encyclopedia, 6th ed., 2013
Read now
......There are three basic accentual methods: stress, tone, and length. In English each word...several syllables may also have secondary stress as in el´e-va´tor. In English, vowels...are all pronounced the same. Sentence stress, known as intonation or contour, includes......
9.
fatigue (in engineering)
- Publication:
-
The Columbia Encyclopedia, 6th ed., 2013
Read now
......metals, after repeated applications of stress. Fissures may be formed within pieces...has started it spreads under repeated stress until the metal ruptures. Examples of...mechanically to cyclic applications of stress. Steel parts are sometimes treated by......
10.
Young's modulus
- Publication:
-
The Columbia Encyclopedia, 6th ed., 2013
Read now
......dynes per square centimeter) the ratio of stress to strain for a wire or bar of a given...s law the strain is proportional to stress, and therefore the ratio of the two is...elastic modulus for tension, or tensile stress, and is the force per unit cross section......