'Light quanta' presentation slideshows

Review Session for Final

1.2k views • 95 slides

Black-body Radiation & the Quantum Hypothesis

Black-body Radiation & the Quantum Hypothesis. Micro-world Macro-world Lect 13. Max Planck. Thermal atomic motion. Air. solid. Heat energy = KE and PE associated with the random thermal motion of atoms. Temperature ? avg KE. Temperature scales. Fahrenheit. 212 F.

988 views • 62 slides

Modern Atomic Theory Electrons in the Atom Electromagnetic Spectrum

Modern Atomic Theory Electrons in the Atom Electromagnetic Spectrum. Fundamentals of Light. Neon advertising signs are formed from glass tubes bent in various shapes. An electric current passing through the gas in glass tube makes the gas glow with its own characteristic color.

634 views • 51 slides

Einstein and quantum theory of solids

564 views • 38 slides

Einstein and quantum theory of solids

437 views • 38 slides

photons

photons. Physics 100 Chapt 21. Photoelectric effect. cathode. anode. Vacuum tube. Photoelectric effect. Vacuum tube. Experimental results. Electron KE ( electron Volts). For light freq below f 0 , no electrons leave the cathode. f 0. Even if the light Is very intense.

564 views • 34 slides

PHOTONS AND FIBRES

PHOTONS AND FIBRES. Lecturer : Professor Laurie Cahill. PHOTONS AND FIBRES. What is light? Is light a particle or a wave? What is a photon?. HISTORY. Newton - Light is a stream of corpuscles Huygens, Maxwell,Young - Light travels in waves

435 views • 31 slides

Light and the Electromagnetic Spectrum

Light and the Electromagnetic Spectrum. Light Phenomenon. Isaac Newton (1642-1727) believed light consisted of particles By 1900 most scientists believed that light behaved as a wave. . The Electromagnetic Spectrum.

461 views • 26 slides

Birth of Quantum Mechanics

286 views • 21 slides

Waves, Light & Quanta

Waves, Light & Quanta. Tim Freegarde. Web Gallery of Art; National Gallery, London. electron wavelength. Davisson-Germer experiment. NICKEL TARGET. C Davisson & L H Germer, Phys Rev 30 705 (1927). ELECTRON DIFFRACTION. electrons behave like waves. Diffracting atoms.

395 views • 18 slides

chemistry

chemistry. 5.3. Physics and the Quantum Mechanical Model.

264 views • 17 slides

Waves, Light & Quanta

Waves, Light & Quanta. Tim Freegarde. Web Gallery of Art; National Gallery, London. Circumference of the earth. (Tropic of Cancer). Eratosthenes of Cyrene (276-195 BC). 5000 stadia ~ 5000 x 180m = 900 km. ? = ? ~ 1/50 circle. Radius astronomicus. Reinerus Gemma-Frisius , Leuven.

294 views • 17 slides

The Photoelectric effect

383 views • 9 slides