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7/24/2019 b.ing aksel

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RainbowBy :

1. Ayu Rani Dewinta P

2. Nabila Fajrina3. Ni Wayan Pariastini4. Shanraewi

!eranin"ru#


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Rainbow

A rainbowis an o$ti%al an #eteorolo"i%al$heno#enon that %auses a s$e%tru# o& li"ht to

a$$ear in the s'y when the Sun shines on to

ro$lets o& #oisture in the (arth)s at#os$here. *tta'es the &or# o& a #ulti%oloure ar%+ with re onthe outer $art o& the ar% an ,iolet on the innerse%tion. Rainbows %an be %ause by other &or#s

o& water than rain+ in%luin" #ist+ s$ray+ an ew.


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-isibility-isibilityRainbows #ay also &or# in the s$ray %reate by wa,esRainbows #ay also &or# in the s$ray %reate by wa,es

%alle s$ray bows/%alle s$ray bows/Rainbows %an be obser,e whene,er there are waterRainbows %an be obser,e whene,er there are waterro$s in the air an sunli"ht shinin" &ro# behin at aro$s in the air an sunli"ht shinin" &ro# behin at alow altitue an"le. 0he #ost s$e%ta%ular rainbowlow altitue an"le. 0he #ost s$e%ta%ular rainbowis$lays ha$$en when hal& the s'y is still ar' withis$lays ha$$en when hal& the s'y is still ar' with

rainin" %lous an the obser,er is at a s$ot with %learrainin" %lous an the obser,er is at a s$ot with %lears'y in the ire%tion o& the sun. 0he result is a lu#inouss'y in the ire%tion o& the sun. 0he result is a lu#inousrainbow that %ontrasts with the ar'ene ba%'"roun.rainbow that %ontrasts with the ar'ene ba%'"roun.

At "oo ,isibility %onitions &or ea#$le+ a ar' %louAt "oo ,isibility %onitions &or ea#$le+ a ar' %loubehin the rainbow/+ the se%on ar% %an be seen+ withbehin the rainbow/+ the se%on ar% %an be seen+ with

in,erse orer o& %olours. At the ba%'"roun o& the bluein,erse orer o& %olours. At the ba%'"roun o& the blues'y+ the se%on ar% is barely ,isible.s'y+ the se%on ar% is barely ,isible.


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Rainbow is one o& the beauti&ul s%enery that

we rarely see. *& seen+ the sha$e o& arainbow as a bow in the s'y a$$ears bluebe%ause o& re&ra%tion o& the sun when rainA$$roi#ately where ya %an see the

rainbow sually a rainbow %an be seen in#ountainous areas or when o,er%ast orwhen the new rains sto$$e own. Rainbowis the only ele%tro#a"neti% wa,es that we

%an see. *t %onsists o& se,eral %olors$e%tru#.


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Guys, can mention what are theGuys, can mention what are thecolors that we can see in thecolors that we can see in the

rainbow? Yes, indeed, among therainbow? Yes, indeed, among the

colors are red, yellow, green, blue,colors are red, yellow, green, blue,

orange, purple and there areorange, purple and there areactually other colors that we can notactually other colors that we can not

refer directly to the eye.refer directly to the eye.


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Re has the "reatest wa,elen"th+ while,iolet has the s#allest wa,elen"th. !owo rainbows &or# et us ea#ine whenthe sun)s rays on the #irror bra%'et orthe e"e o& the $ris# "lass+ or soa$

&oa# sur&a%e+ we see i5erent %olors o&li"ht. What ha$$ens is that white li"ht isre&ra%te into ,arious wa,elen"ths o&li"ht ,isible to our eyes as re+ oran"e+

yellow+ "reen+ blue+ an $ur$le.


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0he wa,elen"th o& this li"ht to &or#0he wa,elen"th o& this li"ht to &or#

ribbons $arallel stri$es+ ea%h %olor shaesribbons $arallel stri$es+ ea%h %olor shaes

with the %olor net to it. 0his ban %allewith the %olor net to it. 0his ban %alle6s$e%tru#6. *n the s$e%tru#+ re line is6s$e%tru#6. *n the s$e%tru#+ re line is

always lo%ate at one en an the shee$always lo%ate at one en an the shee$

an $ur$le on the other+ an this isan $ur$le on the other+ an this is

eter#ine by the i5eren%e ineter#ine by the i5eren%e inwa,elen"th. When we see the rainbow+wa,elen"th. When we see the rainbow+

the sa#e as when we see the s$e%tru#. *nthe sa#e as when we see the s$e%tru#. *n

&a%t+ the rainbow is a lar"e %ur,e&a%t+ the rainbow is a lar"e %ur,e

s$'etru# %ause by the re&ra%tion o&s$'etru# %ause by the re&ra%tion o&sunli"ht.sunli"ht.


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When sunli"ht throu"h water ro$lets+su%h as when he re&ra%te throu"h the

$ris# "lass. So in the ro$lets o&water+ we),e "ot a i5erent %oloretens &ro# one sie to the other

water ro$lets. So#e o& the %oloreli"ht is then re7e%te &ro# the &ar sieo& the water ro$lets+ a"ain an a"ainout o& the water ro$lets.


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i"ht out o& the water ro$s ba%' towarsthe i5erent+ e$enin" on the %olor. Anwhen we see these %olors in the rainbow+we will see it is #ae with re on to$ an$ur$le on the botto# o& the rainbow.Rainbow %an be seen only in the rain

alon" with the sun shinin"+ but &ro# theo$$osite sie o& the obser,er. 8ur $osition#ust be between the sun an waterro$lets with the sun ibe'alan" us. 0he

sun+ our eyes an the %entral ar% o& therainbow shoul be in a strai"ht line.


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0han' 9ou

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