1. The Cloud Spotter's Guide: The Science, History, and Culture of Clouds by Gavin Pretor-Pinney.. and
2. The Rainbow and You by E.C. Krupp
In T.C.S.G (The Cloud Spotter's Guide) it told me that...
- Rainbows fall within the group of optical effects explained by the way sunlight interacts with water droplets by reflecting back toward the observer, who is facing away from the sun.
- The sunlight passes into the raindrops and reflects off the inside of their surfaces and back toward the sun.
- The sunlight's wavelengths are bent at different angles as they pass in and out of raindrops, which has the effect of seperating them. We see the differing wavelegths as different colors when we look at a rainbow.
- The author made up a little poem that tells the fact that no two people see the same rainbow:
Your rainbow is not my rainbow
- It was Alexander of Aphrodisias who first described primary and secondary rainbows in AD200. He said that the faint blue/purple arcs that can appear just inside a bright primary rainbow is called a "supernumerary bow." This bow results from the interference of light waves overlapping when they emerge from different parts of the raindrops.
- Most people think that or draw raindrops in the shape of tears. Raindrops may be perfect little spheres but once they've grown large enough to fall fast,they are greatly distorted by air resistance and are not actually not shaped like spheres at all.
- Raindrops actually look like the top half of hamburger buns.
- Anyone who has seen drops of water fall from the sink, the water drops do actually look like tear drops, but not actual raindrops in the sky.
- When you see drops of water falling from a sink, they extend under their growing weight, clinging with all their might to their surface tension on the faucet, only to lose themselves in the sink below.
That is all the information that I got from that book.
Rainbow and You told me that...
- Some people say that there is a pot of gold at the end of the rainbow, but it's never been found. The real treasure of the rainbow is its color.
- Have you ever tried to walk under a rainbow? You can't, and you can't touch it either. That doesn't mean that rainbows aren't real. It just means that they aren't solid. Rainbows are actually light. You can only catch one with your eyes and imagination.
- The rainbow has seven colors-
Red
Orange
Yellow
Green
Blue
Indigo
Purple
- You can remember the colors with sentences such as:
1. Roy-G-Biv: who is known to get his name from the colors of the rainbow.
2. Run Onto Your Gold Before It Vanishes
- The rainbow gets its name from its shape from the weather that makes it happen. Long ago, people thought the rainbow looked like a bow for shooting arrows. Because they saw this bow of color only when it was raining, they called it a rainbow.
- It takes more than rain to make a rainbow. It also takes sunshine. Whenever you look at a rainbow, the sun is behind you. The falling raindrops, in the distance in front of you, are like a movie screen. Sunlight hits the raindrop screen, and the rainbow appears in full color.
- The Acient Greeks noticed the way rainbows come and go and said that the rainbow travels with a messenger from the gods. They called her Iris and said she flies along the rainbow's colorful bridge between heaven and Earth. She magically lifts water from the Earth into the clouds, and it falls as rain.
- The Vikings believed a rainbow bridge connected Asgard, the sky kingdom of the high gods, with Misgard, the earth below. Asgard was supported in the heavens by the branches of World Tree. The god Heimdall guarded the rainbow from giants who lived at the edge of the sky.
- The Navajo of the American Southwest say the Monster Slayer and Born for Water, the twin hero sons of the sun, journeyed to their father's world by stepping onto the rainbow.
- In Siberia, people said that the rainbow was the storm god's bow and with it, he shot arrows of lightning through the sky.
- Australian tribes know the rainbow as the great serpent of the Dreamtime. that was the time, they say, when the world was created.
- In the Bible, the rainbow signals the end of the rain and is God's promise the world will not be destroyed by flood again. Because it takes broken clouds to let the sunlight fall against the rain, rainbows usually do tell us the rain is ending.
- Black and white are not colors. We see black when there is no light, and when there is no light, there is no color. White is just all the colors combined together.
- Isaac Newton is the scientist who discovered the rainbow. He also discovered the law of gravity, which explains why raindrops fall. Newton showed that sunlight is really made up of the rainbow's colors. when those colors are mixed, we call it white light.
- Newton bend the light with a wedge of glass called a prism and made a rainbow out of sunlight in a darkened room. He sent that rainbow through another prism and combined the colors back into white light. That proved the rainbow was in the sunlight.
- Raindrops can spread sunlight into the colors of the rainbow by bending light. Raindrops are water and water can bend light. In the air, all of the colors in the sunlight travel together in the same direction. When they enter the raindrop, the colors seperate as they bend in different directions.
- The back of the raindrop works like a mirror. Inside the raindrop, most of the sunlight is bent and bounced back to the front of the drop, where the light entered.
- By then, the light is aimed back toward the ground in the sun's direction. If you are in the right place, you will see some of that light as a rainbow.
- The world's largest natural arch is the Rainbow Bridge National Monument in Utah.
- By bending and bouncing light, each raindrop makes its own rainbow, but that's not the rainbow you see. One drop makes only a tiny part of the rainbow. It takes millions and billions of raindrops to steer the entire rainbow your way.
- Red in the rainbow comes from raindrops that are higher in the sky and violet in the rainbow comes from raindrops that are lower in the sky.
- Rainbow Facts:
1. Rainbows are always opposite the sun.
2. When the sun is low, the rainbow is high. The higher the sun, the lower the rainbow.
3. The sky is bright inside the rainbow and dark outside.
4. Some rays of light bounce out of the raindrops at other angles, and add white light inside the rainbow.
5. In the winter, the raindrops freeze into snowflakes, and so we get fewer rainbows.
6. Rain forests and rainy tropical islands, like Hawaii, get rainbows more frequently.
- Our world is the only planet in the solar system where rainbows are possible. The sun makes the Earth just the right tempature to have water. If we didn't have water, we wouldn't have rainbows.
That is all the information I got from Rainbow and You by E.C. Krupp. I didn't have any help today except the books because they were informational. That is all the information that I am going to have on rainbows though because I think I have enough and I want to focus on what information I am going to use and how for the final presentation. (:
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