measurement uncertainty calibration

Uncertainty in Measurement - When dealing with objects that can be counted, one can always get an exact answer. But while measuring the weight of a person, the volume of milk in a container, the length of a cloth etc. it is not possible to measure them exactl..

When dealing with objects that can be counted, one can always get an exact answer. But while measuring the weight of a person, the volume of milk in a container, the length of a cloth etc. it is not possible to measure them exactl..

All moving objects in our daily life have well defined paths or trajectories. The path or trajectory of an object can be determined by knowing its position and velocity at various intervals of time. However, Werner Heisenberg, in 1927, pointed out that we can never measure accuratel..

All moving objects in our daily life have well defined paths or trajectories. The path or trajectory of an object can be determined by knowing its position and velocity at various intervals of time. However, Werner Heisenberg, in 1927, pointed out that we can never measure accurately both..

To determine the position of an object, we must be able to see the object. This can be done with the help of light of suitable wavelength. When a beam of light falls on an object, the photons of this incident light are scattered by the object and the reflected light enters our eye. Now, if the obje..

It should be borne in mind that the uncertainty is not due to lack of sufficiently refined techniques but it is due to the fact that one cannot observe microscopic things without disturbing them. No instrument can observe the position of an electron without affecting its motion. In ..

Limitation of the measuring instrument is an important factor. This leads to uncertainty in measurement. In order to understand this, let us assume that we want to measure the volume of the liquid with a graduated cylinder. If the volume of the liquid is mor..

If the same error is repeated every time in a series of observations, the error is said to be constant error. Constant error is due to faulty calibration of the scale of a measuring instrument. In order to minimise the constant error, measurements are made with all po..

The value of uncertainty in velocity, D v is much higher than the velocity of light (3.0 x 10 8 ms - 1 ) and therefore, it is not possible. Hence an electron cannot be found within the atomic nucleus. In 1927, Erwin Schrodinger described the behavior of electrons around the nucleus by a m..

Heisenberg, in 1927 pointed out that it is not possible to measure simultaneously both the momentum (or velocity) and the position of a microscopic particle with absolute accuracy. Mathematically this may be expressed..