Dirac Delta Function - How does it work? | Maths of Quantum Mechanics

#quantummechanics #dirac #physicsdaemon In this video we explain what is Dirac’s delta function, why it was invented, and how it works… This was invented by the famous British physicist, Paul Dirac, in 1927… as he was developing his own formalism of Quantum Mechanics. It has the remarkable property of being able to pick out the value of an arbitrary function, at a particular point… Dirac’s delta function is essential for defining the normalisation of continuous states in quantum mechanics... It is closely related to another of Dirac's invention; the bra and ket notation, describing the quantum states of particles... This video is about the mathematics of quantum mechanics... ► Weinberg’s book on Quantum Mechanics https://amzn.to/46msMA9 (This my affiliate link. As an Amazon Associate I earn from qualifying purchases.) ► Quantum Mechanics course : https://youtu.be/SrlyM1ZoYW0 Some more good books for your physics reading list : Here are my affiliated links(As an Amazon Associate I earn from qualifying purchases.) ►Susskind’s Theoretical Minimum series : 1.) Classical Mechanics : https://amzn.to/47HPpiV 2.) Quantum Mechanics : https://amzn.to/48qO6ph 3.) Special Relativity and Classical Field Theory : https://amzn.to/3I5tvvO 4.) General relativity : https://amzn.to/48rNcZv ►Landau & Lifshitz series : 1.) Mechanics : https://amzn.to/48BSMtk 2.) The Classical Theory of Fields : https://amzn.to/48uOYc9 3.) Quantum Mechanics: Non-Relativistic Theory : https://amzn.to/3uJkw0j 4.) Quantum Electrodynamics : https://amzn.to/3T4XGtf 5.) Statistical Physics, Part1 : https://amzn.to/49nTfiT 6.) Fluid Mechanics : https://amzn.to/49mAPPI 7.) Theory of Elasticity : https://amzn.to/42M65oF 8.) Electrodynamics of Continuous Media : https://amzn.to/42Jve3v 9.) Statistical Physics, Part2: Theory of the Condensed State : https://amzn.to/3SKU6TJ 10.) Physical Kinetics : https://amzn.to/3OQ7c0Q ►Greiner series : -Classical Theoretical Physics : Classical Mechanics: Point Particles and Relativity : https://amzn.to/48uPqqR Classical Mechanics: Systems of Particles and Hamiltonian Dynamics : https://amzn.to/48iLREm Classical Electrodynamics : https://amzn.to/3uyhGeC Thermodynamics and Statistical Mechanics : https://amzn.to/3I95ELU -Theoretical Physics : Quantum Mechanics: An Introduction : https://amzn.to/42R0Sfl Quantum Mechanics: Special Chapters : https://amzn.to/48m7C65 Quantum Mechanics: Symmetries : https://amzn.to/3SEx4Og Relativistic Quantum Mechanics : https://amzn.to/3I7LgdS Field Quantization : https://amzn.to/3I5bVIr Quantum Electrodynamics : https://amzn.to/3wgGqbx Quantum Chromodynamics : https://amzn.to/49JuxJU Gauge Theory of Weak Interactions : https://amzn.to/49IBIlc Nuclear Models : https://amzn.to/3I3rWP4