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İzahLight dispersion conceptual.gif
English: This is a conceptual animation of the dispersion of light as it travels through a triangular prism.
In vacuum (shown in black), light of any wavelength will travel at a fixed speed, c. But light slows down in a different medium (such as glass or water), and light of shorter wavelengths (like indigo) will tend to travel slower than light of longer wavelengths (like red)
This model attempts to convey this fact and its consequences by idealizing light as small particles travelling in space. Of course, light is not made of small particles but of electromagnetic waves, so keep in mind this conceptual aspect of the image to avoid any misconceptions about the nature of light itself. For our purposes, however, the model will suffice.
White light, represented here by white dots, is actually made out of light of several frequencies (colors) travelling together. These basic frequencies of visible light are part of what we call visible spectrum, and it is only tiny part of the entire electromagnetic spectrum.
As white light enters a medium (in this case, the prism), each of its composing wavelengths will travel at a different speed in the new medium, and this change in speed is what bends the path in which light is travelling. This is the phenomenon we call refraction. The ratio between the speed of light in vacuum and the speed of light in a medium is what we call index of refraction, and this value is specific for a given wavelength and medium.
Since light of different wavelengths will change direction by a different amount, we will experience a division of white light in its composing spectral colors, represented here by colored dots. This is what we call dispersion.
Once the basic frequencies are separated in this animation, we can easily see the difference on their speeds. Red, with a long wavelength, passes through almost without any change, whereas indigo (with short wavelength) is left behind by all the other colors. However, this difference in speed does not hold in vacuum, and this can be seen on how all light exiting the prism will once again travel at the constant speed of light in vacuum.
This is all just an easy way of seeing it, so it is important to stress once again the fact that this model is not entirely accurate, as light is not made of little round particles, and white light can't exist on its own (as can be misunderstood from the big white dots).
Deutsch: Animation der Lichtbrechung in einem Prisma.
Tarix
Mənbə
Öz işi
Müəllif
Lucas Vieira
Lisenziya
Public domainPublic domainfalsefalse
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Animación conceptual de la dispersión de la luz a través de un prisma triangular.
Larger "white" photons may give a better idea of "division of white light". Also, removed magenta color since it is not a spectral color (I don't know why I didn't do this earlier)
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Fayl Faylin tarixcesi Fayl kecidleri Faylin qlobal istifadesiDaha yuksek versiyasi yoxdur Light dispersion conceptual gif 8206 700 435 piksel fayl hecmi 119 KB MIME novu image gif ilmelenib 8 cercive 0 8 s Bu fayl Vikimedia Commons dadirve diger layihelerde istifade edile biler Faylin tesvir sehifesine get Xulase IzahLight dispersion conceptual gif English This is a conceptual animation of the dispersion of light as it travels through a triangular prism In vacuum shown in black light of any wavelength will travel at a fixed speed c But light slows down in a different medium such as glass or water and light of shorter wavelengths like indigo will tend to travel slower than light of longer wavelengths like red This model attempts to convey this fact and its consequences by idealizing light as small particles travelling in space Of course light is not made of small particles but of electromagnetic waves so keep in mind this conceptual aspect of the image to avoid any misconceptions about the nature of light itself For our purposes however the model will suffice White light represented here by white dots is actually made out of light of several frequencies colors travelling together These basic frequencies of visible light are part of what we call visible spectrum and it is only tiny part of the entire electromagnetic spectrum As white light enters a medium in this case the prism each of its composing wavelengths will travel at a different speed in the new medium and this change in speed is what bends the path in which light is travelling This is the phenomenon we call refraction The ratio between the speed of light in vacuum and the speed of light in a medium is what we call index of refraction and this value is specific for a given wavelength and medium Since light of different wavelengths will change direction by a different amount we will experience a division of white light in its composing spectral colors represented here by colored dots This is what we call dispersion Once the basic frequencies are separated in this animation we can easily see the difference on their speeds Red with a long wavelength passes through almost without any change whereas indigo with short wavelength is left behind by all the other colors However this difference in speed does not hold in vacuum and this can be seen on how all light exiting the prism will once again travel at the constant speed of light in vacuum This is all just an easy way of seeing it so it is important to stress once again the fact that this model is not entirely accurate as light is not made of little round particles and white light can t exist on its own as can be misunderstood from the big white dots Deutsch Animation der Lichtbrechung in einem Prisma Tarix yanvar 2007 Menbe Oz isi Muellif Lucas Vieira Lisenziya Public domain Public domain false false Men bu eserin muellif huquqlarinin sahibi kimi eseri ictimai mulkiyyete verirem Bu icaze butun dunyada quvvededir In some countries this may not be legally possible if so Bunun qanunla mumkun olmadigi hallarda Istenilen sexse istenilen meqsed ucun qanunlar terefinden qadagan edilmeyince hec bir sert qoymadan bu isden istifade haqqini bagislayiram CaptionsazerbaycancaAdd a one line explanation of what this file representsispanAnimacion conceptual de la dispersion de la luz a traves de un prisma triangular Items portrayed in this filetesvir ediryaradiciSome value without a Vikiverilenler itemmuellifin qisa adi Lucas VieiraWikimedia username nbsp ingilis LucasVBURL nbsp ingilis http commons wikimedia org wiki User LucasVBcopyright status nbsp ingiliscopyrighted dedicated to the public domain by copyright holder nbsp ingilislisenziyareleased into the public domain by the copyright holder nbsp ingilisyaranma tarixiyanvar 2007source of file nbsp ingilisoriginal creation by uploader nbsp ingilis Faylin tarixcesi Faylin evvelki versiyasini gormek ucun gun tarix bolmesindeki tarixlere klikleyin Tarix VaxtKicik sekilOlculerIstifadeciSerh indiki17 28 24 fevral 2007700 435 119 KB LucasVBChanging white photons back to the same size as the colored ones 17 32 1 fevral 2007750 498 117 KB LeyoAuf eine alte Version zuruckgesetzt 11 39 23 yanvar 2007750 498 117 KB LucasVBLarger white photons may give a better idea of division of white light Also removed magenta color since it is not a spectral color I don 039 t know why I didn 039 t do this earlier 16 54 21 yanvar 2007700 435 121 KB LucasVBOnce again larger 700px but now a constant stream of photons per request The file is actually smaller now because we just need 8 frames 05 01 21 yanvar 2007450 296 379 KB LucasVBLarger size 20 52 20 yanvar 2007250 167 265 KB LucasVBConceptual animation of w dispersion of light Fayl kecidleri Bu sekile olan kecidler Isigin dispersiyasi Faylin qlobal istifadesi Bu fayl asagidaki vikilerde istifade olunur ar wikipedia org layihesinde istifadesi الكندي ضوء انكسار فيزياء غاليليو غاليلي تجربة ميكلسون ومورلي ازدواجية موجة 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