Temperature Measurement Standards. ASTM's temperature measurement standards provide the material and property specifications, as well as guides for the testing, calibration, and use of laboratory, industrial, and clinical instruments used in the determination of thermal variables, particularly temperature.
A bulging disc occurs more often as we age or as repetitive activities weaken the the disc. Herniated discs are more often specifically related to trauma/injury sustained and are more acute (sudden) in onset.
Herniated Disc Cause #2: Injury. A herniated disc can also be caused by an injury. You can herniate a disc in a car accident, for example: the sudden, jerking movement can put too much pressure on the disc, causing it to herniate. Or you can herniate a disc by lifting a heavy object incorrectly, or by twisting extremely.