Concept of Rest Mass of Photon: According to Einstein’s quantum theory light propagates in the form of packets i.e. quanta of energy, which is called photon. The rest mass of…
Category: B.Tech./1Sem/Physics
Length Contraction Notes for Physics
Length Contraction Notes for Engineering Physics: The animations below depict this phenomenon of length contraction. In each animation a spaceship is moving past Earth at a high speed. The spaceship…
The Lorentz Transform Equations for Physics | Explain Lorentz’s Transformation Equations
The Lorentz Transform Equations for Physics: After the review of Galilean transform equations lets look new transformation equations relating (x,y,z,t) and (x’,y’,z,t’). The motion is only in the x direction.…
Galilean Transform Equations Notes for Physics
Galilean Transform Equations Notes for Engineering Physics BTech 1st Year: Galilean Transformation Definition, Galilean Transformation Explanation: In An introduction to the mechanics of Galileo and Newton, we saw that converting…
Time Dilation Notes for Engineering Physics
Time Dilation Explained for Engineering Physics: The most important and famous results in Special Relativity are that of time dilation and length contraction. Here we will proceed by deriving time…
Einstein’s Postulates in Physics Notes
Einstein’s Postulates: With two deceptively simple postulates and a careful consideration of how measurements are made, Einstein produced the theory of special relativity. 1. The Principle of Relativity: The laws…
Michelson Morley Experiment Notes
Michelson Morley Experiment Notes: In the 19th century, physicists generally believed that just as water waves must have a medium to move across (water), and audible sound waves require a…
Inertial and Non Inertial Frames of Reference
Relativistic mechanics, science concerned with the motion of bodies whose relative velocities approach the speed of light c, or whose kinetic energies are comparable with the product of their masses…
Frames of Reference in Physics
Frames of Reference in Physics: Before considering the difference between inertial and non-inertial frames of reference it is firstly important to consider what is a frame of reference and why…
Type I and Type II Semiconductor for BTech 1st Year Students
On the basis of obeying meissner effect,semiconductors are divided in two different classes as given below. Type I Superconductors(strictly follows M.E.): The pure metals which exhibit zero resistivity at low…