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Refraction, Dispersion and Resonance

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Automatisierte Medienanalyse

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Erkannte Entitäten
Sprachtranskript
we're putting together a single optical system in order to produce a parallel beam of light there is a certain that during this like shield the prompted Georgia's placing a carbon arc behind it the art approximating a point source of light ssh in all
resolution in this blast and shows divergent been but as I told you we want a parallel George is introducing a color making them a 2nd
lens focuses the light on the little screen it's the image
of the brightly lit circular holes In the light to you have
between here and here is still parallel this is a red filter it passes only a narrow band of red wavelengths the red image
on the screen is of course far less intense between
these 2 points for these monochromatic unwitting
glass prism into the being read by his peers because it had been retracted by the president it is that the way
through quite a large angle they we are now looking
at a price of the being from above the light beam is refracted as a dentist glass it is bent toward the line which is normal to the
glasses we hope that you have heard before snails law which governs this phenomenon and how
this war can be derived from 2 important assumption these are the 1st that like the wave motion and 2nd that it be used less inside the glass men outside In this film we're not concerned with the simple derivation of the lot retraction rather we asked the question Why is the speed of light less in glass than outside In light of the glass prisms flow red red-light down the current added there will continue to assume that like the way to the precise and electromagnetic waves so I want you to think of a single monochromatic light beams I finally found a way of giving Craig by the I mean the speed with which it has advances that is the so-called the philosophy In previous it had a value of 3 times that of the year meters per 2nd and it usually denoted by the letters asking the speed of light increase face is that thing called President it true you know when light passes through matter the velocity of light emitted material can be different for different frequencies and what's more it can even be larger than the for some something all is
possible because of the way the atoms and molecules of the material reacted the light at the pact is over show To begin our classical theory of refraction let us think 1st of empty space then over light waves coming at us through the end of day will be we plan to fill the outline part of space with a material such as glass or another dielectric we should think of it in successive molecular layers and have indicated the 1st later let's concentrate on display the incident electromagnetic field off today as the light wave passes over the later the vertical oscillating is the electric field it causes the electric charges in the molecules to oscillate up and down the positive charges 1 way the negative charges competently but 2 kind of charge are separated the electric field creates alternating molecular dipole moment no the magnetic field which oscillates horizontally here also exert a force on the moving charges in the molecules but this force is small because the speed the of the moving charges is very small compared to we can neglect its effect in our discussion notice that we chose to let the molecular dipole oscillate in pace with the incident with we don't really know why they should be in at this point
let's just assume that the molecular oscillators responding fate will prove to to you that this leads to a slowing down of the light which will explain the bending of red light toward the normal as it enters glass what is important to
us now is to realize that the arsenic and IPOs will radiate each will send out its own little electromagnetic dipole which will spread from it in all directions we want to know the effective at forward .period any .period such as the 1 marked P. will receive a small signals from each of these type of In addition of course the incident wave will get through for instance considered away from the dipole atop right a signal logo from a torch .period also in the sea but this dipole isn't outlined IPO it is further from the than the dipole on the axis he indicated here the signal takes longer to reach people on the outlying IPOs than from those near the exit so the signal arriving at the from on outlined dipole at any given instant Will lagging phase behind the signal reaching peace from the died along the axis at the same instant it will also like the phase of the incident wave reaching 1 can calculate the resultant face today in the composite waved from all the polls perhaps surprisingly
Lichtbrechung
Massenresonanz
Sensor
Licht
Optik
Source <Elektronik>
Buntheit
Faraday-Effekt
Bogenlampe
Hitzeschild
Computeranimation
Schwarzes Loch
Licht
Siebdruck
Speckle-Interferometrie
Mikroskopobjektiv
Wellenlänge
Siebdruck
Speckle-Interferometrie
Energielücke
Schmalspurlokomotive
Glasherstellung
Gauß-Bündel
Glasherstellung
Leitungstheorie
Anstellwinkel
Drehen
Licht
Gauß-Bündel
Lichtgeschwindigkeit
Tonfrequenz
Fahrgeschwindigkeit
Glasherstellung
Schwächung
Nanometerbereich
Förderleistung
Gasturbine
Elektromagnetische Welle
Jahr
Material
Vorlesung/Konferenz
Schwingungsphase
Beschusszeichen
Schwingungsphase
Computeranimation
Konzentrator <Nachrichtentechnik>
Anzeige <Technik>
Halbwellendipol
Licht
Tag
Glasherstellung
Elektrische Ladung
Dielektrikum
Druckkraft
Magnetische Kraft
Negativer Widerstand
Lichtbrechung
Atomistik
Magnetspule
Material
Ersatzteil
Gruppensteuerung
Dipol <Nachrichtentechnik>
Klangeffekt
Kleinsignalverhalten
Umlaufzeit
Elektrisches Signal
Drehen
Gleichstrom
Schwingungsphase
Halbwellendipol
Bestrahlungsstärke
Mikrowelle
Lötlampe
Satz <Drucktechnik>

Metadaten

Formale Metadaten

Titel Refraction, Dispersion and Resonance
Autor Leitner, Alfred
Lizenz CC-Namensnennung 3.0 Unported:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
DOI 10.5446/17734
Herausgeber Rensselaer Polytechnic Institute
Erscheinungsjahr 1975
Sprache Englisch
Produzent Rensselaer Polytechnic Institute, Office of Instructional Media
Produktionsjahr 1973

Inhaltliche Metadaten

Fachgebiet Physik, Technik
Abstract Animation and scientific instruments are used to demonstrate the principles of refraction, dispersion and resonance.
Schlagwörter refraction
dispersion
resonance

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