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Varavīksne

Zoe Iranzo-Lauriņa 12.e
Kas ir varvīksne?
 Tā ir optiskā paradība, kura parādās mākoņainā debesī pēc lietus, kur
gaismas stari no saules laužās caur maziem ūdens pilieniem, radot krāšņu
gaismu spektru
 Baltās gaismas atstarošanās caur vienu lietus lāsi:
Dubultvaravīksne
Parādās tad, kad saules augstums virs horizonta ir ne vairāk kā 53 grādos, atšķirībā
no parastās varavīksnes, kur saules augstums virs horizonta ir ne augstāk par 42
grādiem. 53 grādos
Varavīksne ir ar
apgrieztu krāsu
spektru.
Debesis starp
dubultvaravīksni ir
tumšākas.
Mēness varvīksne
Košā mēness naktī mēness izstaro pietiekami daudz gaismas, lai būtu iespējams
tā saucāmā mēness varavīksne. Cilvēka acs gan spēj tikai kā baltu gaismu to
saskatīt, bet ar palielinātas ekspozīcijas fotogrāfiju palīdzību var redzēt, ka tā ir
Krāsaina.
Varavīksnes krāsas
Tradicionāli pieņemts, ka varavīksnes lokā ir septiņas krāsas:
sarkana,
oranža,
dzeltena,
zaļa,
Baltās gaismas spektrs
gaiši zila,
tumši zila,
violeta.
Bet patiesībā tai ir bezgalīgs krāsu spektrs,
kā arī krāsu toņi, kas cilvēku acīm nav saskātams:
Infrasarkanais un ultraviloētais starojums.
Katrai krāsai ir atšķirīgs laušanas un atstarošanas
leņķis, tāpēc mēs redzam visas krāsas lokā.
Palaižot balto gaismu caur prizmu, var iegūt visu varavīksnes krāsu spektru.
Paldies par uzmanību! 

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Varavīksne

  • 2. Kas ir varvīksne?  Tā ir optiskā paradība, kura parādās mākoņainā debesī pēc lietus, kur gaismas stari no saules laužās caur maziem ūdens pilieniem, radot krāšņu gaismu spektru  Baltās gaismas atstarošanās caur vienu lietus lāsi:
  • 3. Dubultvaravīksne Parādās tad, kad saules augstums virs horizonta ir ne vairāk kā 53 grādos, atšķirībā no parastās varavīksnes, kur saules augstums virs horizonta ir ne augstāk par 42 grādiem. 53 grādos Varavīksne ir ar apgrieztu krāsu spektru. Debesis starp dubultvaravīksni ir tumšākas.
  • 4. Mēness varvīksne Košā mēness naktī mēness izstaro pietiekami daudz gaismas, lai būtu iespējams tā saucāmā mēness varavīksne. Cilvēka acs gan spēj tikai kā baltu gaismu to saskatīt, bet ar palielinātas ekspozīcijas fotogrāfiju palīdzību var redzēt, ka tā ir Krāsaina.
  • 5. Varavīksnes krāsas Tradicionāli pieņemts, ka varavīksnes lokā ir septiņas krāsas: sarkana, oranža, dzeltena, zaļa, Baltās gaismas spektrs gaiši zila, tumši zila, violeta. Bet patiesībā tai ir bezgalīgs krāsu spektrs, kā arī krāsu toņi, kas cilvēku acīm nav saskātams: Infrasarkanais un ultraviloētais starojums. Katrai krāsai ir atšķirīgs laušanas un atstarošanas leņķis, tāpēc mēs redzam visas krāsas lokā.
  • 6. Palaižot balto gaismu caur prizmu, var iegūt visu varavīksnes krāsu spektru.