4 天之前 · A rainbow is caused by sunlight and atmospheric conditions. Light enters a water droplet, slowing down and bending as it goes from air to denser water. The light reflects off the inside of the droplet, separating into its component wavelengths--or colors.

2023年9月23日 · When you hear the word "rainbow," maybe you think about the clouds parting at the end of rainy day, or a Pink Floyd album cover, or a mythical pot of gold. But how are rainbows formed? The science is pretty straightforward. It all starts with a prism. Imagine a triangular piece of glass or plastic.

2024年5月30日 · What is a Rainbow? It takes both the sun and rain to make a rainbow! To put it plainly, rainbows are produced by sunlight entering water droplets, bouncing around each individual bead of water, and changing direction (refracting) to reflect off the back of the droplet to return back toward us.

A rainbow is a familiar sight in the sky when it rains on planet Earth, but what causes this spectacularly colourful phenomenon? Put simply, a rainbow is caused by interaction between sunlight and atmospheric water. This most commonly means raindrops, but mist and spray can also cause rainbows. Diffraction of light causes a rainbow effect.

When white sunlight hits a collection of raindrops at a fairly low angle, you can see the component colors red, orange, yellow, green, blue, indigo and violet -- a rainbow. For simplicity's sake, we'll only look at red and violet, the colors of light on the ends of the visible light spectrum.

2024年12月1日 · rainbow, series of concentric coloured arcs that may be seen when light from a distant source—most commonly the Sun—falls upon a collection of water drops—as in rain, spray, or fog. The rainbow is observed in the direction opposite to the Sun.

2010年1月6日 · How Are Rainbows Made?The rainbow is the most common and yet wonderful example of a color spectrum. What does it take to make a rainbow? The conditions must be right. The sun must be in one part of sky and rain falling in another. You must stand with your back towards the sun.

2006年4月10日 · When light hits the rain at just the right angle, it is refracted through a raindrop and into our eyes, causing us to see a rainbow. But how does the "white" sunlight produce a multicolored...

2020年4月28日 · Rainbows are formed when light from the sun is scattered by water droplets (e.g. raindrops or fog) through a process called refraction. Refraction occurs when the light from the sun changes direction when passing through a medium denser than air, such as a raindrop.

The rainbow we normally see is called the primary rainbow and is produced from one internal reflection. The secondary rainbow arises from two internal reflections and the rays exit the drop the second time at an angle of around 50 o, rather than the 42 o for the primary rainbow.