The length is the most extended dimension of an object. Length may be distinguished from height, which is vertical extent, and width or breadth, which are the distance from side to side, measuring across the object at right angles to the length. Length is a measure of one dimension, whereas area is a measure of two dimensions (length squared) and volume is … Leggi tuttoLength
A detector is a device (or substance in chemical field) that indicates the presence of a phenomenon, body, or substance when a threshold value of an associated quantity is exceeded.
A sensor is a device of a measuring system that detects and is directly affected by a phenomenon, body, or substance carrying a physical quantity to be measured. The specific input could be light, sound, heat, motion, moisture, magnetism, pressure, or any one of a great number of other environmental phenomena. The output is generally … Leggi tuttoSensor
Calibration or instrument calibration is one of the primary processes used to maintain instrument accuracy. Is the operation that, under specified conditions, in a first step, establishes a relation between the quantity values with measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties and, in a second step, uses this information to … Leggi tuttoCalibration
The metre (British and original French spelling) or meter (American spelling) is the base unit of measurement of the length in the International System of Units (SI). The SI unit symbol is: m. Is defined as the length of the path travelled by light in a vacuum during a time interval of 1/299 792 458 of a second. The definition of the meter was once … Leggi tuttoMeter or Metre