The rainbow

The rainbow is one of the optical phenomenon that occurred naturally in the atmosphere of the earth. In physics, colors often identified from the wavelength. For example, the color red has a wavelength around 625 - 740 nm and blue around 435 - 500 nm. The colors that is stated in the wavelength (usually symbolized by the λ) is called the spectrum of color. The colors this is a component of the white light which is called visible light (visible light or the waves appear. The other component is the light does not appear (illusory light), as an infrared (at the right hand of the color red) and ultraviolet light (on the left side of the orange). White light that we see (also called visible light or visible light consists of all components of the colors in the spectrum above - of course there are other components that are not seen, called the illusory light.

The most simple often used to describe the white color is the prism glass. A prism of glass describes the white light came to components of the light. In nature is not only the prism that can describe the light. In addition. water droplets from rain water is one of the examples of the available objects in nature that can describe the white light. When a bunch of white light about a drop of water droplets of water is berprilaku as the prism. He describes the white light so have been envisioning the colors of the rainbow. A drop of water berprilaku as prism when receiving a beacon of white light. Some of the light is reflected toward the observer, partly forwarded. The colors in a rainbow as the building blocks of a wide because we see only one color to one water droplets. The light of the sun is described by the water droplets A only to our eyes on the wavelength of the color of red. Meanwhile, water droplets B gives the wavelength of the color purple. Water dripping on them give each one wavelength in our eyes. So that eventually the observers see the rainbow with the full color

We can only see the rainbow as a maximum of half-circle. To see the rainbow apples one circle, then we must stand in the high places.

The Picture above shows that a rainbow is a circle. It is true that a rainbow is a circle, not dish such as the assumption some people. In the land, we see only a maximum of a rainbow and a half circle. If we stand in the rain, for example in aircraft, so we can see the rainbow one circle intact. This is all caused by the optical geometry in the parsing process colors. With this optical geometry also we can explain a straight line that passes through our eyes and the sun also passes through the focal point of the rainbow circle. Because the rainbow created involving the distance the observer with water droplets, then the rainbow always move with the movement of the observer. This makes the distance we with a rainbow constant (same), in other words we can never be approached the rainbow. 

A rainbow is formed because of the refraction of sunlight by water droplets in the atmosphere. When sunlight passes through water droplets, light is bent in such a way as to make the colors on the light separate. Each color is twisted at different angles and the color red is the color of the most recent bent, while blue is the most first. starting from the light of the sun and the light of the sun is the light that consists of several colors or often called polikromatik. The light that can be captured by the human eye with without the tool only 7 colors are orange red, yellow, indigo and purple. The colors also called with visible light. In the light of the red and blue why there is always above and below on the rainbow? This is because the red light is part of the spectrum of visible light that has the lowest frequency or wavelength most long when compared with other visible light. And the light blue has the highest frequency and wavelength most short. So between red and blue does not meet each other, red color is located at the end of the rainbow and the color purple is located at the bottom of the rainbow. The rainbow occurs when the light of the experience of the refraction of light when the sun is exposed to rain water. A rainbow can only be seen at a time when there was rain comes with the light of the sun. The position of the observer also determine, namely among the rain and the rays of the sun and the rays of the sun is located at the rear of the observers. Until there is a straight line between the sun and the observer, and bow. As a result of the rainbow were formed as a result of the refraction. after we know how pelagi can be formed, now let us know the types of the rainbow. The rainbow is a creation of God which is very beautiful. The colors of the rainbow very diverse,blending into one and looks very beautiful if seen. The rainbow itself has many types of. There are 9 types of a rainbow is scarce. Rare means a rainbow is rarely seen even appears only once in a year. Happy people who never see the rainbow steps. This he 9 types of a rainbow is scarce.

The rainbow nature consists of six colors: red, orange, yellow, green, blue and purple. The intensity of the color of each of them depending on the conditions in the atmosphere and time.

A rainbow is actually looks like a perfect circle bow (with radius right 42 degrees, according to Descartes).

Red Rainbows usually seen when the morning or evening when the filter thickness of the atmosphere of the earth to blue, more visible as red or orange light droplets reflect and refract the water. The result is a rainbow with red end of the spectrum.

The most frequently seen low in the sky on a bright winter day, sundogs occurs when the sun shines through the ice crystals high in the atmosphere. Sundogs on the inside of the red and blue on the outside with the rest of the spectrum many of them. The more thick ice crystal concentration in the air, increasingly thick and its structure.

Fogbows more rarely seen from the rainbow, because certain parameters that must be adjusted to create them. For example, the light source must be located in the back of the observer and down to earth. Also the thick at the back of the observer must be very thin so that the rays of the sun can shine through thick fog in the future.

The waterfall mist mixed into the air flow constant atmosphere continuously, apart from the weather. This makes a photo of a waterfall is very good for the rainbow.

The rainbow is not made from fire, a name for this beautiful optical effects is "circumhorizontal arc". This phenomenon can only be seen in certain specific conditions: cloud cirrus, who acted as the prism must be at least in the height of the 20,000 feet and sun should highlight when they are in the height of 58-68 58 degrees. Rainbow Fire have not been seen in the location of more than 55 degrees north or south.

Moonbows is a partner for the lunar rainbow. They are also far more difficult to see because of the storm rain must be passed and the, ideally, the full moon that the light is not hindered by the clouds.