6A65.50 - Water Drop Lens - Oil Drop Lens
Place a drop of water onto the Plexiglas plate. Using this as a lens look at the writing on the flexible magnet.
Place one of the spherical lenses into a hole in one of the cards. Using this as a lens look at the writing on the flexible magnet.
Place the watch glass on the Bunsen burner stand with the curved side down. Place 10 or 15 mL of water into the watch glass. Using this as a lens look at the writing on the flexible magnet.
Place the shot glass onto the magnetic calendar and then place the glass marble into the shot glass. In this configuration you should not be able to read the numbers by looking through the marble because of the very short focal length. Adding water to the shot glass will increase the focal length and make the numbers recognizable.
Place several of the polyacrylamide polymer hydrophilic spheres in water over night. They will grow to a diameter of approximately 5 cm and have the same index of refraction as the water which will make them virtually invisible in the beaker. A single sphere can be used as a large water drop lens with large magnification.
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- "Soda Straw Magnifying Glass", Physics From the Junk Drawer, 3rd Edition, The Science House, North Carolina State University, p. 48.
- "Oil Drop - Oil on Water", Physics From the Junk Drawer, 3rd Edition, The Science House, North Carolina State University, p. 49.
- "Waterdrop Microscope", Laser Classroom.
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