Modern Physics - Definition, Father of Modern Physics, FAQs

Edited By Team Careers360 | Updated on Nov 11, 2024 07:21 PM IST

Modern physics is a field of physics that uses post-Newtonian notions to study the fundamental nature of the universe. Some experimental discoveries in the early twentieth century did not meet the expectations of classical physics, which describes physical phenomena on a small scale. These hypotheses eventually gave birth to modern physics. Quantum theory and the theory of relativity are the two cornerstones of modern physics. Quantum theory describes small-scale physics and gravity, whereas relativity theory describes large-scale physics and gravity. Both theories can be used to approximate the outcomes of classical theory

JEE Main 2025: Physics Formula | Study Materials | High Scoring Topics | Preparation Guide

JEE Main 2025: Syllabus | Sample Papers | Mock Tests | PYQs | Study Plan 100 Days

NEET 2025: Syllabus | High Scoring Topics | PYQs

This Story also Contains

Who is the father of modern physics or founder of physics or father of physics in world or father of modern physics-
What is modern physics? Or Define modern physics or concept of modern physics -
Topics of modern physics-

Modern Physics - Definition, Father of Modern Physics, FAQs

modern physics

NCERT Physics Notes:

Who is the father of modern physics or founder of physics or father of physics in world or father of modern physics-

Physics is the scientific study of all natural phenomena, both theoretically and experimentally. Numerous scientists have contributed to the subject's advancement. The title "Father of Physics" is bestowed on three scientists at different times, based on their most significant achievements. For his contributions to Astrophysics, Galileo Galilei is known as the Father of Observational Physics.

The laws of motion and gravitation were created by Sir Isaac Newton. His idea, which works fine on a small scale, is the foundation of classical physics. In mathematics, he also taught calculus theory. Newton is renowned as the Father of Physics because of his significant contributions.

Albert Einstein is widely regarded as the founder of modern physics. He established both the special and general theories of relativity. These theories explain how objects behave at great speeds (near the speed of light) and in the presence of gravity. For his explanation of the photoelectric effect, he received the Nobel Prize.

Also read -

What is modern physics? Or Define modern physics or concept of modern physics -

Modern physics is a field of physics concerned with post-Newtonian concepts in the physical universe. It is based on two important twentieth-century breakthroughs: Relativity and Quantum Mechanics.

Modern physics frequently includes parts of quantum mechanics and Einsteinian relativity, as well as a more advanced description of nature through new theories that differ from classical descriptions. Quantum effects, for example, frequently require atomic distances. Relativistic effects, on the other hand, usually entail velocities that are slower than the speed of light.

The following are some of the most important notions in quantum theory:

Particle - Wave Light has the properties of both a wave and a particle. Photons, or energy quanta, makeup light. The nature of particles is that they travel in waves. Particles are spatially delocalized.
The Uncertainty Principle states that it is impossible to measure a particle's precise position and momentum at the same time.
Problem with Measurement: Observing or measuring a system affects its condition.

JEE Main Highest Scoring Chapters & Topics

Just Study 40% Syllabus and Score upto 100%

Download E-book

Concept of relativity –

No big object can travel faster than the speed of light. For all observers, the laws of physics remain unchangeable.
The curvature of spacetime is caused by mass.
The length of an object decreases as it approaches the speed of light (length contraction). The speed of a moving clock decreases (time dilation).
The cause-effect structure (causality) or the sequence of events is preserved.
The masses of gravity and inertia are the same.

Related Topics Link,

Topics of modern physics-

The following are the topics that are regarded important to the subject's foundation:

The evolution of the atomic model in general and atomic theory in particular
Radiation from a black body
Experiment with Franck and Hertz
Rutherford's experiment (Geiger–Marsden experiment)
Gravitational lensing is a type of gravitational lensing that occurs
Experiment Michelson–Morley
Effect of photoelectricity
Thermodynamics at the quantum level
In general, radioactive phenomena
Mercury's perihelion precession
Experiment Stern–Gerlach
Solid
wave-particle duality

Also read :

Did you know?

Light can be bent by gravity. It creates gravitational lensing, which is the bending of light when it comes close to a huge object.
Near a large object, time slows down.
Gravitational attraction occurs as a result of spacetime bending.
Gravitational waves are created when a mass accelerates and causes ripples in spacetime. Gravitational waves were discovered in 1915.
By setting proper constraints, classical physics can be recovered from current physics.
Quantum physics is verified by electron interference, photoelectric effect, hydrogen spectrum, and blackbody radiation.
Planetary orbital anomalies, temporal gaps in satellites, and gravitational waves all fit relativity's predictions.
Gravitational force, electromagnetic force, strong and weak forces are the four primary forces in nature. The Standard model describes the last three forces.
Scientists are attempting to combine quantum theory and the theory of relativity by developing a more broad theory, dubbed the "theory of everything."

Also check-

Frequently Asked Questions (FAQs)

1. What makes classical physics different from current physics?

The behaviour of matter and energy on a normal scale of observation is the focus of classical physics, but most of current physics is concerned with the behaviour of extreme conditions, or on a very big or very tiny scale, affecting matter and energy.

2. What are modern physics' two pillars?

"One of the major problems with twentieth-century physics is that so much of modern physics is built on two foundations that emerged in the early twentieth century," he explains. "One is relativity, and the other is quantum mechanics," says the author.

3. What is the name of the founder of quantum physics?

Niels Bohr and Max Planck, two of the founding fathers of quantum theory, each received the Nobel Prize in Physics for their work on quanta.

4. Who is credited with the invention of classical physics?

It comprises of physical notions based on Sir Isaac Newton's foundational works, as well as mathematical methods established in the 17th century by Gottfried Wilhelm Leibniz, Joseph-Louis Lagrange, Leonhard Euler and others used the term "motion of bodies under the influence of a system of forces" to describe how bodies move when they are subjected to a set of forces.

5. Who do you think is the father of modern physics, and why do you think that is?

Galileo Galilei was the first to utilise a refracting telescope to make key astronomical discoveries, and he pioneered the experimental scientific process. He is known as the "Father of Modern Astronomy" and "Father of Modern physics," among other titles. Galileo was dubbed the "Father of Modern Science" by Albert Einstein.

6. What is modern physics' most important contribution in the modern world?

Physics uses mathematical formulas to explain how the natural world works. The achievements in electronics that have resulted in modern computers and electronic media are due to physics theory.