Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
|
5development stages of optic
|
one birth of optics before 17 century
light propagation reflection refraction simple lens to geometrical optics 17th to 19th century law ofreflection refraction telescope 3 wave optics 19th century Young's interference Frenzel diffraction wave properties Maxwell EM theories for quantum mechanics 20th century photo generation light interactions with matters particle wave dual nature 5modern optics laser 1960's laser optics widespread application |
|
|
Galileo conclude what
|
light travels at least 10 times faster than sound
|
|
|
Kepler
|
discovered total internal reflection show why telescopes work developed a first-order theory of geometrical optics discovered small-angle approximation to law of reflection
|
|
|
Willibrord snell
|
discovered law refraction
|
|
|
Pierre de fermat
|
Fermat's principle light follows the path of least time he proved reflection laws angle of incidence is equal to angle of reflection
|
|
|
follows the path of least time
|
light
|
|
|
James Bradley
|
estimated the speed of light 3 x 10^8 by stellar aberration
|
|
|
lightbends around corners
|
diffraction
|
|
|
adopted value for speed of light
|
generla conference of weights and measures October 21st 1983
|
|
|
Max planck
|
introduce the concept of quantum mechanics in black body experiment
|
|
|
MASER
|
microwave amplification by stimulated emission of radiation 1964 Nobel Prize in Physics
Townes, Basov, Prokhorov |
|
|
LASER
|
light amplification by stimulated emission of radiation.. Theodor maiman 1960 first Ruby lazer
|
|
|
first gas laser
|
helium neon in 1961 Javan, Bennett herriott
|
|
|
light is a
|
wave and particle made up of photons
|
|
|
what kind of wave is light
|
electromagnetic waves... electric and magnetic fields are in phase.. EB and the propagation direction are all in perpendicular the transversal wave
|
|
|
what is light really
|
Maxwell's EM theory,propagation of light... quantum theory, interaction of light and matter absorption and emission of light.... together they make quantum electrodynamics
|
