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It is caused by the dispersion of sunlight by tiny water droplets, present in the atmosphere. The drops act like small prism. They refract and disperse the incident sunlight, then reflect it internally, and finally reract it again when it comes out of the rain drop. Due to the dispersion and internal reflection of light different colors reach the observer's eyes
When it rains the air gets moist. The moisture splits the light even after it stops raining.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoRainbows appear due to the refraction and internal reflection of light rays that enter the drop, each colour being bent through a slightly different angle. Hence, the combined colours are separated upon emerging from the drop.
As light enters a water droplet, the different wavelength colours bend at slightly separate angles. Some of this light reflects off the back of the droplet and is bent a second time as the droplet emerges from the light beam. Drops at different angles send distinctively different colours to the eye.
If light is hitting raindrops at a proper angle, a secondary, larger rainbow will appear outside of the main rainbow. This secondary rainbow is fainter in colour than the main one because the light has been reflected twice by each raindrop. This double reflection also reverses the colours in the secondary rainbow.
To see a rainbow, an observer must have her back to the sun and rain must be falling in some part of the sky. Since each raindrop is lit by the white light of the sun, a spectrum of colours is produced.
No two observers will ever witness exactly the same rainbow because each will view a different set of drops at a slightly different angle. Also, each colour seen is from different raindrops.
Wiki User
∙ 11y agoRain cleans the sky of pollutants. That's why the sky appears clear after a rain.
Each cloud droplet forms on a particle, ridding air of one particle. Droplets within a cloud collect more particles.
"It takes about a million cloud droplets to form a raindrop," emails physicist and meteorologist Craig Bohren, distinguished professor emeritus at the Pennsylvania State University.
So each raindrop cleans more than a million particles from the air. Furthermore, raindrops are big enough to reach the ground, before they completely evaporate, and "hence, they transport particles downward," says Bohren. On the way down, the drops collect and remove even more refuse from the sky. Rain washes the sky clean.
Wiki User
∙ 14y agoBecause the durst particle is removed after rain.
Srishti Mishra
The visibility increases after rain because all the partical present in the atmosphere will get fall down with rain water.
Srishti Mishra
Wiki User
∙ 16y agoWater molecules reflects the sunlight. Rainbows only appears when there are water in the air and light to be reflected in the water.
Wiki User
∙ 14y agobecause rain is sweat and evaporation that enters the air and is cleaned by the tempriture of the air
Wiki User
∙ 12y agoThis happens because the polluted air,smoke,dust etc. are washed away by the rain and since it rains the clouds dissapear
Wiki User
∙ 12y agobecause the dust particles in the rain get loaded with the rain
Wiki User
∙ 9y agodue to the presence of moisture content in air after the rain
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Will rain decrease humidity?
No. Rain itself increases humidity. However, in temperate latitudes rain often comes before a cold front, which can decrease humidity.
Why hot days mostly rain fall occur?
Rain fall tends to occur mostly on hot days because the hot air tends to evaporate and rise. When the water vapor increases, it cool and condenses to form clouds and soon rain.
What will happen if humidity increases until the air cannot hold more water vapor?
it occurs as rain,fog,or mist
What is a result of emissions from the use of fossil fuels?
Increased hydrocarbon pollution and acid rain. Increased temperatures and resultant increases in sea levels.
Why does visibility get reduced when warm and cold currents meet?
Because Ben Jones controls the visibility at his will.
Why does visibility increases after rain name the process involved?
this is happen because the polluted air smoke dust etc.are washed away by the rain .but process name is not identified.
If the visibility is good what will the weather be like?
If the visibility is good, it indicates that there are no significant weather conditions affecting visibility, such as fog, rain, or snow. Generally, in such cases, the weather is likely to be clear with little to no cloud cover. However, the exact weather conditions and temperature can vary depending on the season and location.
What are the period of lowered visibility?
Periods of lower visibility often refer to driving conditions. They would be situations like rain storms, heavy snowfall, or foggy conditions.
What will happen to the rain forests if the temperature increases?
the forest evaporates
Do acid rain increase or decrease the rate of weathering?
Increases it.
Can snow turn into rain?
yes if the weather increases enough
What happens size of waterdrops increases in the clouds?
They begin to fall as rain.
In Pokemon diamond what is a damp rock?
it increases the duration of rain dance.
How does rain falling on a lake purify its water?
it increases the rate of aeration
Will rain decrease humidity?
No. Rain itself increases humidity. However, in temperate latitudes rain often comes before a cold front, which can decrease humidity.
Can rain showers delay a flight?
Only if the rain reduces visibility below a certain level which may vary depending on which country you are in, or if there is strong crosswinds, best to check with your airlines first before travelling.
Say New York has a visibility of 500ft what kinds of weather conditions do they have there you need to know soon?
Rain, snow, or fog; tough to be more specific with so little information. In this season, it would probably be rain.
