Laws Of Physics

Application of Laws Of Physics

By nature, laws of physics are stated facts which have been deduced and derived based on empirical observations. Simply put, the world around us works in a certain way, and physical laws are a way of classifying that “working.”

Physical laws are just conclusions drawn based on years (or however long it takes)  of scientific observations and experiments which are repeated over and over under different conditions to reach inferences which can be accepted worldwide. These are continuously validated by the scientific community over time.

Important Laws of Physics:

Coulomb’s Law Avogadro’s Hypothesis
Conservation Laws Archimedes’ Principle
Biot-Savart Law Faraday’s Law
Ampere’s Law Faraday’s Laws of Electrolysis
Planck Equation Faraday’s law of induction
Kirchhoff’s law Newton’s law of universal gravitation
Kirchoff ‘s first law Bernoulli’s Equation
Kirchoff’s second law Zeroth Law of Thermodynamics
Gauss’ Law First law of thermodynamics
Lenz’s Law Second law of thermodynamics
Ohm’s Law Law of Equipartition of Energy
Joule’s Laws Laws of reflection
Brewster’s law Radioactive Decay Law
Bragg’s Law Laws of Combination
Doppler Effect Einstein Field Equation
Stefan’s Law Stefan-Boltzmann Law
Moseley’s Law Superposition Principle
Laws of Photo Thermodynamic Laws
Laws of Friction Uncertainty Principle
Pascal’s Law Wave-Particle Duality
Snell’s law Fermat’s Principle
Boyle’s Law Huygens’ Principle
Charles’ Law Ideal Gas Law
Equivalence Principle Joule-Thomson Effect
Curie-Weiss Law van der Waals force
Curie’s Law Wiedemann-Franz Law
Dalton’s Law of partial pressures Casimir Effect
Hooke’s Law Continuity Equation
Wein’s Displacement Law Peter Principle
Newton’s Laws of motion Maxwell’s Equations
Newton’s First law of motion Pascal’s Principle
Newton’s Second law of motion Murphy’s Law
Newton’s Third law of motion Mach Number
Law of Conservation of Linear Momentum Electric Potential due to a Point charge

In the beginning, it was assumed that the earth was the center of the universe. Then it was hypothesized that our sun is the center of the universe. We now know that both these conclusions are wrong. The sun may be the center of our solar system, but it is not the center of the universe.

Another example is the odd behavior of the planet Mercury. Newton’s universal law of gravitation was able to explain all the other planets in the solar system but the orbit and rotational period of Mercury was a bit off, and for some time no one knew why. Einstein came to the rescue with his general theory of relativity later on.

The different properties of laws of physics which shed information about their nature is given below

  • True, under specified conditions
  • Universal and do not deviate anywhere in the universe
  • Simple in terms of representation
  • Absolute and unaffected by external factors
  • Stable and appear to be unchanging
  • Omnipresent and everything in the universe is compliant (in terms of observations)
  • Conservative in terms of quantity
  • Homogeneous in terms of space and time
  • Theoretically reversible in time

Basic laws of physics that govern our universe can be categorized in two ways. Classical physics that deals with us, the surrounding environment and the observable universe around us. Apart from this, there is also atomic physics that deals with subatomic particles and their interactions (quantum mechanics).

To learn more about Physics and its laws, download Byju’s the Learning App.

Watch an interesting video on The History of Gravitation.



Practise This Question

A uniform chain of length l is placed on the table in such a manner that its l' part is hanging over the edge of table without the chain sliding. If the coefficient of friction between the chain and the table is μ  then find the maximum length of chain l' that can hang without the entire chain slipping.