Max Planck was a German physicist born in 1858 who made pioneering contributions to quantum theory and is considered the founder of quantum mechanics. Some of his major accomplishments include deducing the relationship between energy and frequency of radiation, which led to his famous Planck's constant and Planck's radiation law. He also helped establish quantum theory and the need for quantum mechanics to describe phenomena at atomic and subatomic scales. Planck received numerous honors for his revolutionary work, including the Nobel Prize in Physics in 1918.

1. Max Karl Ernst Ludwig Planck
:-Father of QUANTUM MECHANICS

2. Early Life
 Born on 23 April 1858 in Kiel, Germany.
 Studied at the Universities of Munich and Berlin.
 Received his doctorate of philosophy at Munich in 1879.

3. POSITIONS
1880–1885
Privatdozent in Munich.
1889
Associate Professor of
Theoretical Physics at Kiel.
1926
Kirchhoff as Professor at Berlin
University.
1937
Afterwards he became
President of the Kaiser Wilhelm
Society for the Promotion 3of
Science.

4. Major
Contributions:
 Quantum theory.
 Deduced the relationship between
the energy and the frequency of
radiation.
 Planck's constant
 Planck's radiation law.
 Max also has a great contribution
in the invention of the theory of
relativity.

5. Quantum mechanics
 Quantum mechanics, science dealing with the
behaviour of matter and light on
the atomic and subatomic scale. It attempts to describe
and account for the properties of molecules and atoms
and their constituents—electrons, protons, neutrons,
and other more esoteric particles such as quarks and
gluons. These properties include the interactions of the
particles with one another and with electromagnetic
radiation (i.e., light, X-rays, and gamma rays).

6. Planck's theory
for uncertainty..

7. Why do we need Quantum Mechanics..
 Newtonian mechanics is only valid in the limit that velocity is low. Move
fast enough, and special relativity takes over.
 Get very small. Matter is comprised of waves, which become apparent at
length scales approaching the diameter of an atom (or several atoms).
So you have to consider quantum mechanics. This is also relevant if you
consider small quantities of energy, such as single photons of light.

8. Planck’s Radiation Law
 Planck’s radiation law, a mathematical relationship formulated to
explain the spectral-energy distribution of radiation emitted by
a blackbody.
 Planck assumed that the sources of radiation are atoms in a state
of oscillation and that the vibrational energy of each oscillator
may have any of a series of discrete values but never any value
between.

9.  Planck’s law for the energy Eλ radiated per unit volume by a cavity of a
blackbody in the wavelength interval λ to λ + Δλ (Δλ denotes an increment of
wavelength) can be written in terms of Planck’s constant (h), the speed of
light (c), the Boltzmann constant (k), and the absolute temperature (T):

11. Photoelectric equation
 Kmax = Maximum kinetic energy of ejected electron (J).
 h = Planck's constant
 f = frequency of incident photons (Hz = s−1)
 Φ = Work function of the material the photons are incident on (J).

12. Photon momentum
 p = momentum of photon (kg m s−1)
 f = frequency of photon (Hz = s−1)
 λ = wavelength of photon (m)
 The De Broglie relations gives:

13. Awards
 Pour le Merite for Science and Arts in 1915
 Chancellor in 1930
 Nobel Prize in Physics in 1918
 Elected Foreign Membership of the Royal Society in 1926
 Lorentz Medal in 1927
 Franklin Medal in 1927
 And many more..

14. Thank you!!
By:
Rishab Saxena (114027)
Rishabh Shinde (114028)
Rohit Shelar (114029)
Rushabh Shah(114030)