A glass prism can easily be seen in air. It is clearly visible despite the fact that it is completely transparent. Consider carefully why this so. (Under the right conditions, a clean glass window may not be so easily seen!)
But when the prism is place in a beaker of a certain type of clear vegetable oil, it is virtually invisible! Explain how this can happen? Specifically, what characteristic must the oil and prism share?
AND for 5 additional bonus points, spend some time on the Lenses/Mirrors Tutorial. The tutorial has a calculator window, but your own calculator will much easier to use. (I'm working on something better.) Try all four levels and make note of any problems or JavaScript errors. Also note the type and version of browser you are using. Write down any sugestions you may have for making the tutorial easier to use or understand. Thanks!
Be sure to enter your full name. Enter your email address if you want the number of points awarded e-mailed back to you. Responses should be brief but complete. You must click the SUBMIT button to submit your entry. (You should receive a "Thank You" reply almost immediately.) Entries are due by noon on Monday of next week.
NOTE: Only your first submission will be accepted!