PIRA: 6A65.56


 Lab Equipment  Directions
  1.  Sheet with “Barium Oxide” printed in red and blue letters
  2. acrylic rod with stoppers on ends
  3. stoppered test tube filled with water
  1.  Look at the words through the test tube, first with it flat on the paper, then with it raised slightly above the paper. What is happening?
  2. Lay the acrylic rod on top of the paper. Look at the two words on the paper through the rod.
(BOTH words are inverted when seen through the rod and raised test tube. They act like convex lenses. ‘OXIDE’ appears to not be flipped since all leters are the same right side up or inverted.