by admin | Jun 4, 2015 | sem1
Youngs modulus by uniform bending Young’s modulus is named after Thomas Young,19th century ,British scientist. In solid mechanics, Young’s modulus is defines as the ratio of the longitudinal stress over longitudinal strain, in the range of elasticity the Hook’s law...
by admin | Jun 3, 2015 | sem1
Population Inversion In science, specifically statistical mechanics, a population inversion occurs while a system (such as a group of atoms or molecules) exists in a state with more members in an excited state than in lower energy states. It is called an...
by admin | Jun 3, 2015 | sem1
Spontaneous and stimulated emission Spontaneous emission If a collection of atoms are in the excited state, spontaneous decay events to the ground state will occur at a rate proportional to N2, the number of atoms in the excited state. The energy difference between...
by admin | Jun 3, 2015 | sem1
Absorption Coefficient Definition and Formula The absorption coefficient determination how far into a material light of a particular wavelength can penetrate before it is absorbed. In a material with a low absorption coefficient, light is only poorly absorbed, and if...
by admin | Jun 3, 2015 | sem1
Non Destructive Testing Nondestructive testing or Non-destructive testing (NDT) is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component or system without causing damage.The terms Nondestructive...
