Posts Tagged ‘lenses’

Lenses and ray diagrams

Thursday, May 12th, 2011

telescope by Waifer X on flickr

Here are links to a couple of sites on ray diagrams.  This first one is factual.  This one is interactive, and covers the different types of image obtained when you place your object various distances from the the lens.  And this site (Thanks for finding it Mr Goodman) is really useful.

Make sure you know the difference between a real and virtual image, an inverted and an upright image, and a magnified and diminished image.

Now that you know all about refraction, and how light bends as it passes through lenses, it’s time to take a look at where we use lenses in our daily (or not so daily) lives.  Microscopes, telescopes, cameras, binoculars, all contain at least one lens.  Your task is to select one application of lenses and do some research on it.  Prepare a glogster poster of your findings.  You must explain what type or types of lenses are present, what refraction has to do with your chosen application, and how it works.  Follow the links here to help get you started.

Lenses glogs

Thursday, May 20th, 2010

Canon FL 55mm f1.2 by Arkku on flickr

You can check out each other’s work by clicking on the links below.  You can learn from each other!  Feel free to give each other feedback by leaving a comment.

  • Sam                                 Grace
  • Karenina                       Daniel
  • Justin                             Tyler
  • Mumba                          Carlo
  • Danilo                             Hiram
  • David                              Timmy
  • Anushay                        Kevin
  • JP                                     Davis
  • Adrian                            Ethan
  • John                                Stefan
  • Sandy                              William
  • Bianca                             Agustin
  • Trix                                  Ines
  • Sera                                  Gaby
  • Gabby                             Juliana
  • Nish                                 Emily