Which Colour Is At Top Of A Rainbow?

Have you ever wondered which colour is at the top of a rainbow? Rainbows are a beautiful natural phenomenon that occur when sunlight is refracted, or bent, as it passes through raindrops in the air. This bending of light causes the different colours of the spectrum to separate and form a circular arc of vibrant hues.

So, what colour is at the top of this magical arc? The answer may surprise you! The colour at the top of a rainbow is actually red. Yes, that's right - red is the first colour you would see if you were standing at the base of a rainbow and looking up towards the sky. However, it is important to note that the order of colours in a rainbow is always the same: red, orange, yellow, green, blue, indigo, and violet.

But why is red at the top? The explanation lies in the way sunlight is refracted and dispersed by water droplets. When sunlight enters a raindrop, it undergoes a process called dispersion, which causes the light to split into its individual colours. This splitting occurs because each colour of light has a different wavelength, and these wavelengths are bent at different angles as they pass through the raindrop.

As a result of this dispersion, red light is refracted the least, while violet light is refracted the most. Therefore, the red light appears at the top of the rainbow, forming the outermost arc. Conversely, the violet light is refracted the most and appears at the bottom, forming the innermost arc of the rainbow.

Next time you spot a rainbow in the sky, take a moment to appreciate its beauty and remember that red is the colour at the top. It's fascinating to think about the science behind rainbows and how light interacts with water droplets to create such a stunning natural display. So, if you find yourself pondering about the colours of a rainbow, remember that red reigns supreme at the top of this enchanting arc of light.

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