시범실험 - 해당되는 글 8건

RC Car를 이용한 정상파 실험입니다.

원문 : http://iopscience.iop.org/article/10.1088/0031-9120/50/5/560

PDF :  ped_50_5_560.pdf

준비물 : 

  1. a long, flexible elastic cord (or string) 긴 신축성있는 고무줄(줄)
  2. battery-operated (electric motor) toy car 장난감 차
  3. a small rod  작은 막대기
  4. cable ties   케이블타이
  5. adhesive   접착제
  6. measuring tape 줄자
  7. a dynamometer (or force sensor) 검력계(또는 힘 센서)
  8. a bicycle speedometer 자전거 속력계

실험장치


실험동영상


      물리/파동광학  |  2016.10.27 10:40




수업 시작전에 환기시키는 목적으로 익혀두면 좋을 듯..


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      과학일반  |  2016.10.19 13:49




This video is a compilation of 10 cool science experiments.
1. Jet engine in a jar
2. Traveling flame
3. Soapy water and gas
4. Drain cleaner and aluminium foil reaction
5. Brake fluid and pool chlorine
6. Coca Cola and pool chlorine reaction
7. Fire snake
8. Elephant toothpaste
9. Sugar and sulfuric acid reaction
10. Flammable hand sanitizer


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      Tag - 마술, 시범실험, 실험, 트릭
      과학일반  |  2016.10.19 13:45




1. Slow motion ball:

You need a thick liquid, preferably honey, a heavy ball, and a sphere shaped container. Place the heavy ball in the lower half of the sphere. Fill the lower half of the container with honey a little more than half.
If you use too little or too much, it will affect the motion of the ball.

2. Water fire starter. Credit goes to The King of Random for this idea. Be sure to check out his channel. He has a huge selection of amazing how to experiments. https://www.youtube.com/user/01032010814

You need a plastic or glass container with a curved area. The Pom bottles work great. Fill the bottle with water. Fold 2 sheets of paper in half, twice. Print or scribble a black mark on one of the sheets. On a sunny day hold the bottle near the paper, focusing the light on the black area of the paper. Once it starts to smoke and a hole begins to form, wrap the other sheet of paper around the smoking piece. Wave the papers through the air to feed oxygen to the spark. Continue this until the paper catches on fire.

3. No-leak magic bag: Al you need is a zip baggy, pencils and water. Fill the bag almost to the top. Zip it shut, and start sticking pencils through the bag. Sometimes a few drops will leak out, but overall, this is a simple yet impressive trick

4. Liquid Stacking:
You'll need a tall glass or bottle. Dish Soap, vegetable oil, dark corn syrup, rubbing alcohol, water and food coloring.

First add the dark corn syrup, then dish soap, then add food coloring to the water and pour it in with the bottle tilted, then add the vegetable oil (bottle tilted), and finally add food coloring to the alcohol and pour it in with the bottle tilted.

5. Invisible Bottle:

You need glycerin, a glass and a bottle that will fit in the glass. Fill both glass and bottle with glycerin and place the bottle in the glass. It looks like the bottle disappears.

6. Dancing Liquid:

You need a powered speaker, a tone generator (can be found online), corn starch, water and plastic to protect the speaker. Pour 1/2 cup of corn starch in a bowl and 1/4 cup of water. Mix. Pour the liquid into the speaker and generate a 60hz tone.

7. Magic Water Barrier:

You need 2 of the same glasses. Hot water, cold water, food coloring and a thin piece of plastic or cardboard. Pour the hot water in 1 glass, the cold in the other glass, add food coloring, then place the plastic on top of the hot water glass. Turn the glass upside down, place it on top of the cold water glass, then carefully remove the plastic. Hot water is less dense than cold water, so it "floats" on top of the cold water.

8. Leidenfrost effect:

You need a pan, water and a stove. Turn the heat on high for about 4 minutes then add the water. This experiment can stain your pans.

9. Reverse Illusion:

Add all sorts of images or words behind a glass, then watch as it reverses when you add water in the glass.

10. Reversing Liquid:

You need 1 big glass, 1 smaller glass, 3 mixing glasses, corn syrup, pipettes, food coloring, and clips.

First pour the corn syrup into the 2 bigger glasses. Place the smaller glass inside of the bigger glass. Attach the clips to prevent the smaller glass from moving side to side in the bigger glass. Pour a small amount of corn syrup into the 3 mixing glasses. Add food coloring and stir. Fill each pipette with a different color, then add the colored corn syrup to your big glass. Turn the smaller glass carefully and watch the colors mix. Turn it back and watch them unmix.

Thanks for watching! Have fun!


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      Tag - 과학, 마술, 속임수, 시범실험
      과학일반  |  2016.10.19 13:42





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학생들에게 보여주기 좋은 정상파 관련 실험


      물리/파동광학  |  2016.10.19 09:35



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