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

Refracting vs Reflecting Telescopes

Sign in to follow this  



The first telescope to be invented was a refracting telescope. A refracting telescope works by using converging lens to collect light. A refracting telescope has a convex lens that bends the parallel light that is coming into it to a focal point. That focal point is where an image is formed of what is being observed. At that point is the eyepiece that you look through to see the focused image. This diagram shows the inside of a refracting telescope.


A reflecting telescope was invented after that refracting telescope by Isaac Newton. A reflecting telescope works by collecting light and reflecting it off of a concave mirror. The light that is reflected comes to a focus point where a flat angled mirror reflects that light up toward an eyepiece where the viewer sees the image. This diagram shows the inside a reflecting telescope. 



Sign in to follow this  


Recommended Comments

There are no comments to display.

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...