====== নোটেশন ======

| $c$ | Speed of light in vacuum |
| $E$ | Energy |
| $E_k$ | Kinetic energy |
| $E_p$ | Potential energy |
| $F$ | Force |
| $G$ | Newton's gravitational constant |
| $h$ | Planck's constant |
| $k$ | Boltzmann constant |
| $m$ | Mass |
| $t$ | Time |
| $v$ | Velocity |
| $v_s$ | Speed of sound in a medium |