Jump to content
Sign in to follow this  
  • entries
  • comments
  • views

Aren't Rainbows pretty?

Sign in to follow this  


What is a rainbow? What makes a Rainbow? Why do we find joy in a rainbow? Well I can only answer a few of these question. Rainbows as we know occur after a it rains and it’s sunny, therefore rainbows must be the effect of diffraction. Diffraction is the change in the wave length when it passes through a barrier. Light waves have to do with rainbows. The sun is known to be white light, the special feature of white light is that it contains all colors meaning white light is an additive color mixture. To determine the visible spectra of light sources we can solve for different wavelengths - Y1=(lambda x D)/s. Different wavelengths exhibit different diffraction angles and each color has a different wavelength therefore each color diffracts at a different place, this allows us to see each color in white light since the diffraction grating has the capability to separate the light. Hence one can create rainbows using a grating and a white light source. So the water left in the air after it rains acts as the grating mechanism and the white light source is the sun.

But to why rainbows create joy I cannot answer, it may be due to the idea of hope or magic or the idea there is a leprechaun at the end with a pot of gold at the end just for you if you can find it. (sorry to ruin your hopes and dreams if you’re a leprechaun hunter  or a gold digger but there is no such thing as that leprechaun and a pot of gold at the end of the rainbow since rainbows actually make a complete circle,. So note to you, stop trying to find the end of the rainbow because it doesn’t exist. You may have better luck looking in the parries of Ireland for those leprechauns and for the gold, maybe try a pirates map, I sincerely wish you the best of luck.)  


Sign in to follow this  


Recommended Comments

There are no comments to display.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Terms of Use

The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.

Copyright Notice

APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to info@aplusphysics.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.

  • Create New...