Light - Wave or Particle

Slides:



Advertisements
Similar presentations
WHAT IS ENERGY? ABILITY TO DO WORK MEASURED IN JOULES (J)
Advertisements

TOC 1 Physics 222 Photoelectric Effect Light (and all electromagnetic phenomena) is made up of photons. The speed (energy) of the electrons is determined.
Atomic Structure I It’s not about Dalton anymore…
Chapter 7: Quantum Theory and Atomic Structure
Atomic Structure From Bohr to Quantum Richard Lasky – Summer 2010.
Honors Chemistry Section 4.1
Properties of Light The Speed of Light Galileo’s Experiment A B c = Round Trip Distance/Total Time.
What is Light?. What is light? We can not understand what light is by examining light under microscope. We have to make whether it explains the observed.
Models Used for the usefulness of things we cannot see, and is ever-changing For example..the model of the atom, our current model of light, the elegibunnybutterduck.
Wave Theory of Light Aristotle (384–322 BC) [4th century BC]
ASTR 2310: Chapter 5 Interaction of Radiation and Matter Atomic Structure Atomic Processes Emission and Absorption Spectra Equation of Radiation Transfer.
Quantum Physics. Black Body Radiation Intensity of blackbody radiation Classical Rayleigh-Jeans law for radiation emission Planck’s expression h =
Lecture 2110/24/05. Light Emission vs. Absorption Black body.
What is Light? What are Electrons?. Light Is light a wave or a stream of particles?
TOC 1 Physics 222 Interference Light (and all electromagnetic phenomena) is made up of waves.
Periodic Table of the Elements Dimitri Mendeleev ( )
Electromagnetic Spectrum The emission of light is fundamentally related to the behavior of electrons.
An incident ray from air strikes dolomite (n = 2.0) at an angle of 30 o from normal. Calculate:  refl &  refr.
Modern Chemistry Chapter 4 Arrangement of Electrons in Atoms
Arrangement of Electrons in Atoms The Development of a New Atomic Model.
Wave - Particle Duality of Light Wave - Particle Duality of Light.
Atomic spectra 10/2/14. The Dual Nature of Light: The Particle and The Wave Ancient Greeks people thought of light as a stream of tiny particles -like.
1 The Quantum Mechanical Model of the Atom Chapter 7.
Particular and Wavelike Kristine Lister.  Christian Huygens: points on a wave as new sources  Isaac Newton: corpuscular theory.
Spectra. White Light Light from many colors mixes to form white light. Different colors have different wavelengths. Shorter wavelengths bend more through.
Atom and Light ASTR 14: Exploring the Universe. 2 Outline Nature of Light Basic Properties of Light Atomic Structure Periodic Table of the Elements Three.
ASTR-1010 Planetary Astronomy Day Announcements Homework Chapter 3: Due Wednesday Feb. 24 Smartworks Chapters 4 & 5 are also posted Exam 2 will.
Chapter 7 Atomic Structure. Light  Made up of electromagnetic radiation  Waves of electric and magnetic fields at right angles to each other.
Light and the Electromagnetic Spectrum. What Kind of Wave Is Light and What Vibrates to Make It? When an electric charge vibrates, the electric field.
Quantum Physics   Quantum   The smallest quantity of a substance that still has the specific properties of that substance Discrete vs. Continuous 
Story of Fundamental Particles from “The Particle Adventure” Website Related Websites: 3- Quantum.
Modern Chemistry Chapter 4 Arrangement of Electrons in Atoms Sections 1-3 The Development of a New Atomic Model The Quantum Model of the Atom Electron.
Edward Frankland ( ). Group 5A Elements When the formulae of inorganic chemical compounds are considered, even a superficial observer is impressed.
Modern Atomic Theory Quantum Theory and the Electronic Structure of Atoms Chapter 11.
Chapter 19-1 Interference of Light. Diffraction HISTORY of the concept of diffraction Begins with the old debate: –Is light a wave –Or is light a particle?
 Waves & Energy H Ch 5&6. Waves  Vibrating disturbance by which energy is transmitted Amplitude (Wavelength) u = λν.
APHY202 3/9/ Huygens’ Principle and Diffraction   Isaac Newton – light is a stream of particles   Christian Huygens – light is a wave 
AP Chemistry Unit 7.  Electromagnetic radiation: Energy that travels at the speed of light and has wavelike behavior  Waves: ▪ Wavelength, λ in meters.
WARM UP 1.List the 3 particles found in atoms. 2.Which of the 3 particles (from #1) are in the “cloud?” 3.What are the particles (from #2) doing in the.
Electromagnetic Radiation. Waves To understand the electronic structure of atoms, one must understand the nature of electromagnetic radiation. The distance.
Planetary Model At first, Bohr thought the atom was much like the sun (nucleus) with the planets (e-) orbiting around it.
Electrons in Atoms Chapter 4.
Announcements Homework for tomorrow… Ch. 22, CQ 3, Probs. 2, 4, & 8
If a single slit diffracts, what about a double slit?
Light and the Electromagnetic Spectrum
Newton studies the Sun’s spectrum
Quantum Chemistry.
Electromagnetic Spectrum
Chapter 6 Electronic Structure of Atoms
Chapter 4 Study Guide How to write electron configurations
Quantized Energy and Photons
Arrangement of Electrons in Atoms
Why Light, why now?.
Can a soccer ball Diffract?
Spectra for Elements Gas A: Hydrogen
Chapter 2 The Ring Nebula
Hydrogen Atom Emission Spectrum
If a single slit diffracts, what about a double slit?
Ch 7 Notes Atomic Structure
A history of atomic structure
ATOMIC SPECTRA.
Spectroscopy and Stationary States
Unit 3: Light and Electrons
Properties of Light.
Atomic Spectra and Flame Test
Arrangement of Electrons
Unit 3: Light and Electrons
Chapter 4 Electron Arrangement.
Light and the Electromagnetic Spectrum
Quantized Energy and Photons
Presentation transcript:

Light - Wave or Particle Isaac Newton (1643- 1727) Christiaan Huygens (1629 – 1695) Proponent of Light Particles Proponent of Light Waves

Key Properties of Wave Behavior Interference Diffraction

Young’s Double Slit Experiment

Wave Nature of Light

Spectrum of White Light

Electromagnetic Spectrum

Photoelectric Effect

Einstein Millikan

Double Slit Experiment Revisited

Atomic Spectra Hydrogen Helium Neon Mercury

Hydrogen Emission Spectrum

Hydrogen Spectrum

Bohr Model of Hydrogen Niels Bohr (1885 – 1962)