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Waves, Sound, and Light 7Â÷ ¹Ì¼Ç

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  • 2013-03-21
5

1. Where is the focal point in a convex mirror?

 

 

 

2. Light bounces off the surface of the mirror. But you can't see anything. How could that be?

 

 

 

 

 

 

To be answered by 3/31 after reading chap4.1(113~118p)

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  • alsxmthsu
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  • 2013-04-05 16:14
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1. Focal point of a convex mirror is placed behind the conves mirror when lights meet.

 

2. We can't see light but we can see the images that lights are reflected from. Lights are reflected with mirror and it comes into our eyes. So instead we see the lights we can see images.

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¾Æ·¡ ¾ÆÀÌÄÜÀ» ¼±ÅÃÇØ ÁÖ¼¼¿ä.

  • Erin37
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  • 2013-03-31 21:58
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1. A focal point is a point at which the rays meet, but rays reflected from a convex mirror move away from each other once reflected. So the rays never meet, and a focal point does not exsist.

2. The lights reflected off a mirror is sent into the eyes. When you look into a mirror, the lights that in sent into the eyes is a image. So you can't see lights, you can see images.

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¾Æ·¡ ¾ÆÀÌÄÜÀ» ¼±ÅÃÇØ ÁÖ¼¼¿ä.

  • annie0717
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  • 2013-03-31 20:36
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1. A focal point is the point at which the rays meet, and the distance between the mirror and it depends on the shape of the curve. In the case of a concave mirror, the focal point is close to the mirror. In the case of a convex mirror, a focal point does not exist. Since a convex mirror is curved outward, the light ray bounce off the mirror and go straight outward, and do not meet forever.

2. When light bounces off a mirror, it comes into our eyes and we see what is in the mirror; our reflection. Unlike most objects, a mirror makes a reflection of the object or person in front of it, and that is how we get to see our reflection in front of a mirror.

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¾Æ·¡ ¾ÆÀÌÄÜÀ» ¼±ÅÃÇØ ÁÖ¼¼¿ä.

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