Rainbow - one of the most amazing natural phenomena.What is a rainbow?How did she come from?These issues interested people at all times.Even Aristotle tried to unravel its secrets.There are many beliefs and legends associated with it (the road to the other world, the link between heaven and earth, a symbol of abundance, etc.).Some peoples believed that the one who will be held under the rainbow, to change their sex.
Her beauty amazes and delights.Looking at the colorful "magic bridge", I want to believe in miracles.The appearance of a rainbow in the sky notifies that the storm is over and it's time to come clear sunny.
When the appearance of the rainbow?It can be seen in the rain or after a shower.But its origin is not enough thunder and lightning.It appears only when the sun breaks through the clouds.We need certain conditions to ensure that it can be seen.You must be between the rain (it should be in front) and the sun (it back).Your eyes, the center of the rainbow and the sun must be in line, or else this magical bridge you can not see!
I'm sure many have noticed, what happens when a ray of white light falls on the bubble or on the edge of the beveled mirror.It is divided into various colors (green, blue, red, yellow, purple, etc.).An object which splits the beam into its component colors, called prism.And the image of a colorful line - spectrum.
So what is a rainbow?This is curved spectrum band of color formed by the division of the light beam when passing through the raindrops (which in this case are prism).
colors of the solar spectrum are arranged in a certain order.On the one hand - red, then orange, close - yellow, green, blue, indigo, violet.Rainbow is clearly visible as raindrops fall evenly and often.The more often, the brighter it is.Thus, raindrop occur immediately three processes: refraction, reflection and expansion of the light.
Where to see the rainbow?Fountains, waterfalls, amid droplets emitted watering machine, etc.Its location in the sky depends on the position of the sun.You can admire all the bright circles if be high in the sky.The higher the sun rises above the horizon, the smaller the colored semicircle.
first attempt to explain what the rainbow was made in 1611 by Antonio Dominici.His explanation differed from the Bible, so he was sentenced to death.In 1637 Descartes gave scientific explanation of this phenomenon is based on the refraction and reflection of sunlight.At the time, I did not know about the expansion of the beam on the spectrum, that is, dispersion.Therefore, Descartes rainbow appeared white.After 30 years of "painted" Newton, complementing theory colleague explaining refraction colored rays in raindrops.Despite the fact that the theory of more than 300 years, it is properly formulated, what the rainbow, its major features (location, color, position arcs angular parameters).
amazing how privychnyye for us light and water together create an entirely new, unimaginable beauty, a work of art, presented to us by nature.Rainbow is always a surge of emotion, and remains in the memory.
