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6A42.u1 - Multiple Refractive Images

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​6A42.u1 - Multiple Refractive Images

Preview
SelectSelected
Title6A42.u1 - Multiple Refractive Images
Objective

To demonstrate multiple images can be resolved using refraction rather than reflections.​

StatusAvailable
Assembly Instructions

Place the smallest fish tank onto a turntable.  Fill the fish tank with water.  Place the blue fish attached to a weight (or some other object that will sink) into the fish tank.  ​Set up a camera so that it views the tank from above one of the upper corners of the tank.  At this angle, you should see multiple images of the submerged object.  Then rotate the tank so that only one (or a possible second) image of the object is visible. 

Setup Time7
Operation Time3
Preview Time5
Operation Instructions

Make sure the camera is visible to the audience.  The fish tank should be oriented so that only a single image of the submerged object is visible (a second image may be visible from the reflection off the top of the water, ignore this one).  Then ask the students what happens if you were to view the object in the tank from one of the corners of the tank.  Finally, rotate the tank until the camera is viewing the tank from that corner.  You should see at least 3 images, but as many as 5.​

ExportableYes
Demo on DimeNo
PIRA 200No
Export Instructions (if different)
HazardsNone
Analysis/Information
Category6 Optics
Subcategory6A - Geometrical Optics
Keywordsrefraction, multiple images, illusion
Construction Information
 
Equipment TitleUse SHIFT+ENTER to open the menu (new window).
  
QuantityUse SHIFT+ENTER to open the menu (new window).
  
fish tank - small
1
turntable - heavy duty, blue with wood top
1
water - from the tap
1
debubbler
1
camera - color
1
light - 9.5W LED, clip mount
1
rubber fish - blue, with aluminum washer weight
1
squeezee clamp
1
beaker 2000 mL glass
1