dearJulius.com Write For Us

How is a rainbow formed?

SHARE:

© Deposit Photos   A rainbow in a field

By Julissa TreviƱo, Popular Science

If you’ve ever seen one, consider yourself lucky. For a rainbow to appear, the conditions must be just right.

Because of their colorful and unique display, rainbows have generated countless legends and myths throughout history. Among the most popular is the Irish folklore that leprechauns store their pot of gold at the end of a rainbow. But the truth is, rainbows can be seen only if you are in the right place at the right time.

If you’ve ever seen one, consider yourself lucky. For a rainbow to appear, the conditions must be just right.

Rainbows can be seen when light passes through raindrops, says Kristin Calhoun, a research scientist at the National Oceanic & Atmospheric Administration (NOAA), the scientific agency focusing in part on the conditions of weather.

When a person sees a rainbow, it’s really an optical illusion created by the refraction and reflection of light. An optical illusion is when you see something that appears to be something other than what is really there.

When sunlight passes through raindrops, the light bends, or refracts, as it enters the droplet, and then reflects off the inside of the raindrop. This happens because the water is more dense than the air that surrounds it. As it exits the droplet, the light separates into wavelengths. Visible light is made up of various wavelengths, and each wavelength appears as a different color: red, orange, yellow, green, blue, indigo and violet. Red light, for example, bends at a different angle than violet light.

This is why “the person on the ground sees each color at a different location,” Calhoun says, and why rainbows look like a bow or an arc. Sometimes, however, rainbows can actually form an entire circle that you can see in a plane with the right conditions.

Because rainbows are created by light via raindrops, the best time to catch a rainbow is when it’s sunny and raining. “There is an even better chance when the sun is at a lower angle, so early or later in the day,” Calhoun says.

If you’re trying to spot one, the key is to face the rain and have your back to the sun.

With the conditions just right, Hawaii gets lots of rainbows. “Small showers and storms often form in late afternoon due to the combined effects of topography and daytime heating of the land,” Calhoun says. “These types [of] showers often produce heavy rain, but remain isolated over the center of the island.”

Because rainbows are optical illusions, they’re not located at a specific distance. The location is relative to the person. That means there’s no chance you’ll ever find that pot of gold.

COMMENTS



Note: If you think this story need more information or correction, feel free to comment below your opinion and reaction.
Like & Follow to Stay Updated ...

Name

AI,3,Amazon,1,Apple,5,Emoji,1,Facebook,17,Games,35,Google,7,Instagram,6,Science,205,Security,4,Social Media,24,Tech,242,Technology,1080,Tesla,5,Twitter,4,
ltr
item
Technology - U.S. Daily News: How is a rainbow formed?
How is a rainbow formed?
https://1.bp.blogspot.com/-mM1yJiUFv0s/XD7HHogN-oI/AAAAAAAAmVs/QxxjOzcM_ZoXomNCqzPZE5AL8ZkgpUAAwCLcBGAs/s1600/1.jpg
https://1.bp.blogspot.com/-mM1yJiUFv0s/XD7HHogN-oI/AAAAAAAAmVs/QxxjOzcM_ZoXomNCqzPZE5AL8ZkgpUAAwCLcBGAs/s72-c/1.jpg
Technology - U.S. Daily News
https://tech.dailynews.us.com/2019/01/how-is-rainbow-formed.html
https://tech.dailynews.us.com/
https://tech.dailynews.us.com/
https://tech.dailynews.us.com/2019/01/how-is-rainbow-formed.html
true
4191228214535516123
UTF-8
Loaded All Posts Not found any posts VIEW ALL Read More Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share. STEP 2: Click the link you shared to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy