The rainbow is only showing when light is put trough a prism or another object that can reflect, refract, and disperse the light source. Typically this object is rain drops when you see rainbows out in the "wild" / non-laboratory setting.
It's important to keep in mind that it's not just the 7 colors that are reflected in the rainbow - the entire color spectrum is shown. We as humans are limited to only see the seven main colors, but animals that has a wider color spectrum sensors can actually see more colors in each end of the rainbow. One end goes into the infrared colors, while the other end goes to the UV colors.
The rainbow also shows all the gradients between each of the seven main colors, but these can be difficult to see for yourself without a way to zoom into the rainbow.
There is a lot more to tell about rainbows, but it quickly delves into the world of particle physics, and I'm not comfortable going any further. We got some great physicists here on the Steem blockchain, so one of them might be able to give a better explanation than I did.
Technically, a rainbow consists of ALL the colours your eyes are capable of seeing, and more. A rainbow is a natural occurrence where light from the sun gets refracted by the atmosphere and (i'm super-boiling the physics down to simple analogies here) since sunlight is made up of many many photons traveling at different wavelengths, they bend at different angles, the end results is a rainbow.
There are more than 7 colours in a rainbow, but our eyes trick us into seeing the most prominent of the colours, sometimes if you look real close at a rainbow, you'd see more than 7 colours sandwiched between the borders of the "main" colours. You'll see cyan between blue and green, brown in red and orange, pink and maroon in blue and purple and so on.
If you really are fascinated at this subject and want to jump down the rabbit hole, you'd see a whole new world of particle and quantum physics which to this day scientists still make discoveries that change our very understanding of science. It's really interesting stuff that sheds light (pun intended) on the way the universe works.
Because Isaac Newton decided that there were seven colors in the spectrum. Newton, in addition to his work on gravity, the laws of motion, and calculus, studied optics.
Newton thought that the colors of light, when white light is split by a prism, were analogous to the notes of a musical scale., so he made sure that there were seven of them. He initially described red, yellow, green, blue, and violet, but added orange and indigo to make the analogy closer. There's no sharp distinction between blue and indigo. and honestly even orange can be hard to distinguish in a rainbow. Cyan (blue-green) would in my opinion have been a better choice to add. But it's somewhat arbitrary: humans can distinguish hundreds of colors, many of which appear in the rainbow spectrum. (Also, a spectrum in a lab and a rainbow caused by rain droplets are somewhat different; the distinctions in the latter as not as sharp.)
If someone asks us how many colors is the rainbow? The most common is to answer without hesitation seven, and even list them: red, orange, yellow, green, blue, indigo and violet. But how much reality does this have? The truth is that these seven colors only exist because of Isaac Newton's beliefs. The physicist who revolutionized the history of science, when in 1704 he published Opticks his study on the decomposition of white light, listed seven colors to fulfill his belief in the law of seven.
The decomposition of white light, which Newton demonstrated through a prism, can be found in nature, achieving one of the most passionate effects for man throughout history: the rainbow. By extension, the seven colors in which Newton broke down the white light are the seven colors that when we are small they teach us to put in the rainbows that we draw.
The physics of the decomposition of white light, is today something obvious, although at the time involved many headaches to several physicists. According to the theory developed by René Descartes and purified by Newton, every time a ray of light passes through a small drop of water suspended in the atmosphere, it comes out refracted showing all the colors that make up visible light.
Why do we always talk about seven colors? The seven is a number with a strong superstition and associated mysticism. Isaac Newton, in addition to laying the foundations of modern physics, spent much of his life studying alchemy, and was a faithful believer in the law of sevens, as the law that governed the Universe.
A rainbow doesn't just have 7 colors, it's just that you can't distinguish the subtle differences between them. The colors of the rainbow range from ultraviolet, through the 7 colors that the human eye can see, to infrared.
Rainbows have seven colors because they are they colors of the spectrum. It's the colors that are found in sunlight.
It's the same result you get when sunlight passes through a prism. It's because of refraction. It separates sunlight into its constituent colors. I'm trying to explain it in the most basic way.
There's a more complex way to explain it but I think you'll do just fine with this.
Rainbow or Rainbow is an optical and meteorological phenomenon in the form of colorful light parallel to each other in the sky or other media. In the sky, the rainbow appears as a light arc with the tip pointing towards the horizon during light rain. Rainbow can also be seen around a raging waterfall.
Sunlight is a polychromatic light "composed of many colors". The white color of sunlight is actually a combination of various light with different wavelengths. The human eye is able to understand at least the seven colors contained in sunlight, which will see the rainbow: red, orange, yellow, green, blue, indigo, and purple.
The light wavelength is formed by parallel lines, each color to the color next to it. This recording is called the color spectrum. In the color spectrum, the red line is always on one side and blue and purple on the other, and this is determined by the difference in wavelength.
Rainbow is the only arc of a large spectrum of colors that occurs due to refraction of sunlight by drops. When sunlight passes through water droplets, it refracts like when it penetrates a glass prism and goes out into the rainbow color spectrum. So in water droplets, we have different colors in a row from one side to the other side of the water drop.
Some of this colored light is then reflected from the far side of the water droplet, back and out again from the water droplets. Light comes back from water droplets in a different direction, depends on the color. Rainbow colors are made in red above and purple on the bottom of the rainbow.
Rainbow is seen as an arc from the surface of the earth because of the limited viewing angle of the eye, if the point of view in the example of the height of an aircraft can be seen as a complete circular color spectrum. Rainbow can only be seen when it rains together with the sun shining, but from the side opposite the observer.
No there are infinite colors in the rainbow we see just 7 colors because these 7 colors come in visible spectrum for human beings. That's the reason we see 7 colors
The rainbow is only showing when light is put trough a prism or another object that can reflect, refract, and disperse the light source. Typically this object is rain drops when you see rainbows out in the "wild" / non-laboratory setting.
It's important to keep in mind that it's not just the 7 colors that are reflected in the rainbow - the entire color spectrum is shown. We as humans are limited to only see the seven main colors, but animals that has a wider color spectrum sensors can actually see more colors in each end of the rainbow. One end goes into the infrared colors, while the other end goes to the UV colors.
The rainbow also shows all the gradients between each of the seven main colors, but these can be difficult to see for yourself without a way to zoom into the rainbow.
There is a lot more to tell about rainbows, but it quickly delves into the world of particle physics, and I'm not comfortable going any further. We got some great physicists here on the Steem blockchain, so one of them might be able to give a better explanation than I did.
Rainbows do not have only 7 colours.
Technically, a rainbow consists of ALL the colours your eyes are capable of seeing, and more. A rainbow is a natural occurrence where light from the sun gets refracted by the atmosphere and (i'm super-boiling the physics down to simple analogies here) since sunlight is made up of many many photons traveling at different wavelengths, they bend at different angles, the end results is a rainbow.
There are more than 7 colours in a rainbow, but our eyes trick us into seeing the most prominent of the colours, sometimes if you look real close at a rainbow, you'd see more than 7 colours sandwiched between the borders of the "main" colours. You'll see cyan between blue and green, brown in red and orange, pink and maroon in blue and purple and so on.
If you really are fascinated at this subject and want to jump down the rabbit hole, you'd see a whole new world of particle and quantum physics which to this day scientists still make discoveries that change our very understanding of science. It's really interesting stuff that sheds light (pun intended) on the way the universe works.
Because Isaac Newton decided that there were seven colors in the spectrum. Newton, in addition to his work on gravity, the laws of motion, and calculus, studied optics.
Newton thought that the colors of light, when white light is split by a prism, were analogous to the notes of a musical scale., so he made sure that there were seven of them. He initially described red, yellow, green, blue, and violet, but added orange and indigo to make the analogy closer. There's no sharp distinction between blue and indigo. and honestly even orange can be hard to distinguish in a rainbow. Cyan (blue-green) would in my opinion have been a better choice to add. But it's somewhat arbitrary: humans can distinguish hundreds of colors, many of which appear in the rainbow spectrum. (Also, a spectrum in a lab and a rainbow caused by rain droplets are somewhat different; the distinctions in the latter as not as sharp.)
See https://www.the-scientist.com/foundations/newtons-color-theory-ca-1665-31931, the source of this image from Newton's works, where he has labelled the colors with a musical scale.
If someone asks us how many colors is the rainbow? The most common is to answer without hesitation seven, and even list them: red, orange, yellow, green, blue, indigo and violet. But how much reality does this have? The truth is that these seven colors only exist because of Isaac Newton's beliefs. The physicist who revolutionized the history of science, when in 1704 he published Opticks his study on the decomposition of white light, listed seven colors to fulfill his belief in the law of seven.
The decomposition of white light, which Newton demonstrated through a prism, can be found in nature, achieving one of the most passionate effects for man throughout history: the rainbow. By extension, the seven colors in which Newton broke down the white light are the seven colors that when we are small they teach us to put in the rainbows that we draw.
The physics of the decomposition of white light, is today something obvious, although at the time involved many headaches to several physicists. According to the theory developed by René Descartes and purified by Newton, every time a ray of light passes through a small drop of water suspended in the atmosphere, it comes out refracted showing all the colors that make up visible light.
Why do we always talk about seven colors? The seven is a number with a strong superstition and associated mysticism. Isaac Newton, in addition to laying the foundations of modern physics, spent much of his life studying alchemy, and was a faithful believer in the law of sevens, as the law that governed the Universe.
A rainbow doesn't just have 7 colors, it's just that you can't distinguish the subtle differences between them. The colors of the rainbow range from ultraviolet, through the 7 colors that the human eye can see, to infrared.
Rainbows have seven colors because they are they colors of the spectrum. It's the colors that are found in sunlight.
It's the same result you get when sunlight passes through a prism. It's because of refraction. It separates sunlight into its constituent colors. I'm trying to explain it in the most basic way.
There's a more complex way to explain it but I think you'll do just fine with this.
Rainbow or Rainbow is an optical and meteorological phenomenon in the form of colorful light parallel to each other in the sky or other media. In the sky, the rainbow appears as a light arc with the tip pointing towards the horizon during light rain. Rainbow can also be seen around a raging waterfall.
Sunlight is a polychromatic light "composed of many colors". The white color of sunlight is actually a combination of various light with different wavelengths. The human eye is able to understand at least the seven colors contained in sunlight, which will see the rainbow: red, orange, yellow, green, blue, indigo, and purple.
The light wavelength is formed by parallel lines, each color to the color next to it. This recording is called the color spectrum. In the color spectrum, the red line is always on one side and blue and purple on the other, and this is determined by the difference in wavelength.
Rainbow is the only arc of a large spectrum of colors that occurs due to refraction of sunlight by drops. When sunlight passes through water droplets, it refracts like when it penetrates a glass prism and goes out into the rainbow color spectrum. So in water droplets, we have different colors in a row from one side to the other side of the water drop.
Some of this colored light is then reflected from the far side of the water droplet, back and out again from the water droplets. Light comes back from water droplets in a different direction, depends on the color. Rainbow colors are made in red above and purple on the bottom of the rainbow.
Rainbow is seen as an arc from the surface of the earth because of the limited viewing angle of the eye, if the point of view in the example of the height of an aircraft can be seen as a complete circular color spectrum. Rainbow can only be seen when it rains together with the sun shining, but from the side opposite the observer.
No there are infinite colors in the rainbow we see just 7 colors because these 7 colors come in visible spectrum for human beings. That's the reason we see 7 colors