LIGHT Experiment 1:  Mirror Science Materials:  Physics 3 Journal, pencil, Science notebook LIGHT Task CARD 1,  2,  3,  4,...
Light TASK CARD 1 Place your flat mirror at the dotted line above each word.  Answer the questions in your Physics Journal...
Light TASK CARD 2 <ul><li>Read the following lines.  </li></ul><ul><li>Change the angle at which the words are reflected i...
Reflected waves are simply those waves that are neither transmitted nor absorbed, but are reflected from the surface of th...
LIGHT Experiment 2:  Curved Mirrors Materials:  Physics 3 Journal, pencil, Science notebook flat mirror, convex mirror, co...
 
LIGHT Experiment 3:  Periscope Fun <ul><li>Procedure: </li></ul><ul><li>Work with a partner to: </li></ul><ul><li>Position...
LIGHT Experiment 4:  Bent Stuff Materials:  Physics 3 Journal, pencil, Science notebook glass of water, pencil, ruler, pen...
LIGHT Experiment 5:  Lens Shape Materials:  Physics 3 Journal, pencil, Science notebook concave lens, convex lens, small v...
LIGHT Experiment 6:  Catch a Rainbow Materials:  Physics 3 Journal, pencil, Science notebook transparent-colored Star Stic...
LIGHT Experiment 7:  Square Circle Illusion Materials:  Physics 3 Journal, pencil, Science notebook square piece of cardbo...
LIGHT Experiment 8:  Physics 3 Journal Materials:  Physics 3 Journal, pencil, Science notebook Procedure: Work on your Phy...
LIGHT Experiment 9:  Persistence of Vision Materials:  Physics 3 Journal, pencil, Science notebook pencil, computer or tv ...
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Physics3 experiments light, Detailed experiments on Light waves: reflection, refraction, & color theory

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Detailed experiments on Light waves: reflection, refraction, & color theory

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  • Light and its nature have caused a lot of ink to flow during these last decades. Its dual behavior is partly explained by (1)Double-slit experiment of Thomas Young - who represents the photon’s motion as a wave - and also by (2)the Photoelectric effect in which the photon is considered as a particle. However, Einstein himself writes: "It seems as though we must use sometimes the one theory and sometimes the other, while at times we may use either. We are faced with a new kind of difficulty." A Revolution: SALEH THEORY solves this ambiguity and this difficulty presenting a three-dimensional trajectory for the photon's motion and a new formula to calculate its energy.More information on https://youtu.be/mLtpARXuMbM
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Physics3 experiments light, Detailed experiments on Light waves: reflection, refraction, & color theory

  1. 1. LIGHT Experiment 1: Mirror Science Materials: Physics 3 Journal, pencil, Science notebook LIGHT Task CARD 1, 2, 3, 4, mirror, pencil, paper <ul><li>Procedure: </li></ul><ul><li>TASK 1 </li></ul><ul><li>Follow the directions on LIGHT Task CARD 1 & answer the questions in your Physics Journal. </li></ul><ul><li>TASK 2 </li></ul><ul><li>Follow the directions on LIGHT Task CARD 2 & answer the questions in your Physics Journal. </li></ul><ul><li>TASK 3 </li></ul><ul><li>1. Follow the directions on LIGHT Task CARD 3 & answer the questions in your Physics Journal. </li></ul><ul><li>TASK 4 </li></ul><ul><li>Write your whole name in cursive normally. </li></ul><ul><li>Write your whole name in cursive only looking at the reflected image (NOT YOUR HAND.) How is that? </li></ul>
  2. 2. Light TASK CARD 1 Place your flat mirror at the dotted line above each word. Answer the questions in your Physics Journal. ---------------------- COOK --------------------- CARBON --------------------- DRY DIOXIDE ICE
  3. 3. Light TASK CARD 2 <ul><li>Read the following lines. </li></ul><ul><li>Change the angle at which the words are reflected into your eyes by holding the paper close to your eyes and at an angle. Can you read it better? Why? Answer in Physics Journal. </li></ul>OPTICAL ILLUSIONS ARE FUN! SCIENCE IS COOL!
  4. 4. Reflected waves are simply those waves that are neither transmitted nor absorbed, but are reflected from the surface of the medium they encounter. When a wave approaches a reflecting surface, such as a mirror, the wave that strikes the surface is called the incident wave, and the one that bounces back is called the reflected wave. Integrated Publishing: Electrical Engineering Training Series <http://www.tpub.com/neets/tm/106-3.htm> Light TASK CARD 3 <ul><li>After reading these directions, place this card in front of the mirror. How are the words reflected to your eyes? Can you read it from the mirror’s image? </li></ul><ul><li>Pull this card away from the mirror & read the card properly now. Do you think you could be trained to read in a mirror? Why? Why not? </li></ul>
  5. 5. LIGHT Experiment 2: Curved Mirrors Materials: Physics 3 Journal, pencil, Science notebook flat mirror, convex mirror, concave mirror, small viewing objects <ul><li>Read the above article on Curved Mirrors. </li></ul><ul><li>Describe your reflection in each mirror: flat mirror, convex mirror, concave mirror </li></ul><ul><li>Move both the flat & convex mirrors to and from your face. Describe the difference in your Physics 3 Journal. </li></ul><ul><li>Move both the flat & concave mirrors to and from your face. Describe the difference in your Physics 3 Journal. </li></ul><ul><li>Observe other items with the different mirrors. Compare the differences. </li></ul>
  6. 7. LIGHT Experiment 3: Periscope Fun <ul><li>Procedure: </li></ul><ul><li>Work with a partner to: </li></ul><ul><li>Position two mirrors such that you can see the back of your head. </li></ul><ul><li>Position two mirrors such that you can look at your partner BEHIND you. </li></ul><ul><li>Position two mirrors such that you can see your partner from around a corner. </li></ul>Materials: Physics 3 Journal, pencil, Science notebook, two flat mirrors per partners
  7. 8. LIGHT Experiment 4: Bent Stuff Materials: Physics 3 Journal, pencil, Science notebook glass of water, pencil, ruler, penny, small fish net <ul><li>Procedure: </li></ul><ul><li>Fill a glass jar with water. </li></ul><ul><li>Drop a penny to the bottom. Watch it fall from the top. Fish it out with the fish net. How did you have to see this? From the top or bottom? </li></ul><ul><li>Drop the penny again. Watch it fall from the side. Leave it. Does it look exactly the same? </li></ul><ul><li>Put a pencil in the water. View it from the side. How does it look? Take it out. </li></ul><ul><li>Put a ruler in the water. View it from the side. How does it look? </li></ul><ul><li>Use your thumb. How does it look? </li></ul><ul><li>Record observations & conclusions in your Physics Journal. </li></ul>HINT: When light waves are bent through a medium, they slow down…
  8. 9. LIGHT Experiment 5: Lens Shape Materials: Physics 3 Journal, pencil, Science notebook concave lens, convex lens, small viewing objects, flashlight, paper <ul><li>Procedure: </li></ul><ul><li>Use both lenses to view a distant object such as a tree out the window or an object on the far wall. </li></ul><ul><li>Describe the differences between the images of the two lenses. </li></ul><ul><li>Observe objects through the magnifying glass. What kind of lens is this? </li></ul><ul><li>Shine light through each lens onto the piece of paper. DO NOT SHINE INTO SOMEONE’S EYES!!! </li></ul><ul><li>Describe how each lens affects the light. </li></ul>
  9. 10. LIGHT Experiment 6: Catch a Rainbow Materials: Physics 3 Journal, pencil, Science notebook transparent-colored Star Sticks (red, blue, yellow), flashlight, white paper, clear fingernail polish, bowl of water, black construction paper <ul><li>Procedure: </li></ul><ul><li>TASK 1 </li></ul><ul><li>Transmit the flashlight beam through each of the colors of Star Sticks onto the white paper. </li></ul><ul><li>Combine the Star Sticks to form the following colors: orange, violet, green, brown. What combinations did you use? </li></ul><ul><li>TASK 2 </li></ul><ul><li>Drop one drop of clear fingernail polish into the bowl of water. Watch the colors separate on the top of the water. </li></ul><ul><li>Lightly touch a piece of black construction paper to the surface of the water above the colors so that it clings to the paper. </li></ul><ul><li>Withdraw the construction paper & let your rainbow dry! </li></ul>
  10. 11. LIGHT Experiment 7: Square Circle Illusion Materials: Physics 3 Journal, pencil, Science notebook square piece of cardboard, push pin, tape, ruler, Illusion WS <ul><li>Procedure: </li></ul><ul><li>TASK 1 </li></ul><ul><li>Cut a piece of cardboard into a two inch square. </li></ul><ul><li>Mark a dot EXACTLY in the center of the square. </li></ul><ul><li>Draw two dark lines approximately like the ones shown. </li></ul><ul><li>Push a pushpin through the center point as shown. </li></ul><ul><li>Use a small piece of tape to secure the pin to the cardboard. </li></ul><ul><li>Spin it on the tabletop. </li></ul><ul><li>Describe what you see in your Physics 3 Journal. </li></ul><ul><li>TASK 2 </li></ul><ul><li>Complete the Illusion Worksheets in your Physics 3 Journal. </li></ul>
  11. 12. LIGHT Experiment 8: Physics 3 Journal Materials: Physics 3 Journal, pencil, Science notebook Procedure: Work on your Physics 3 Journal.
  12. 13. LIGHT Experiment 9: Persistence of Vision Materials: Physics 3 Journal, pencil, Science notebook pencil, computer or tv monitor turned on, notecard, ‘cage’ cutouts, tape <ul><li>Procedure: </li></ul><ul><li>TASK 1: Persistence of Vision– Images focus on you retina. Each image remains on your retina for about 1/16 of a second. This means that you still see an image for 1/16 of a second after it is no longer there. Here’s a simple way to check your eye’s persistence of vision: </li></ul><ul><li>Wiggle a pencil rapidly in front of a computer monitor or tv (turned on). What do you see? </li></ul><ul><li>Now, blink rapidly as you look at the monitor. Do you see the waves as the monitor emits it’s signal rapidly? (normally your eyes don’t notice the cycles.) </li></ul><ul><li>The monitor draws 25 complete pictures each second onto your retina. Each new picture leaves an impression of the pencil you’re shaking! </li></ul><ul><li>TASK 2: </li></ul><ul><li>Securely tape a ‘cage’ onto one side of the notecard (bird cage, fish bowl, tiger cage) </li></ul><ul><li>Draw an animal on the back center of the OTHER SIDE of the notecard. Make sure it is small enough to fit inside the cage. </li></ul><ul><li>Securely tape the notecard to the tip of your pencil. </li></ul><ul><li>Spin the pencil RAPIDLY between your hands and note the illusion due to the persistence of vision. </li></ul>

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