14-중2두산(김성곤)_10과 Afterimages_RA_강윤지_141123-151607.mp3

작성일 :  2014-11-23 15:11

이름 : ㅎㅎㅎㅎㅎㅎㅎㅎㅎㅎㅎㅎㅎㅎㅎ

홈페이지 :  acm-syaron-01
첨부파일 :


잘 봐주세여 ^^

B: I want to buy a snack./

Do you know how to use this machine?/

G: Yeah. First, choose the snack you want. Then, put in the money./

B: OK./

G: Then, just take the snack out./

G: Excuse me. I don't know how to fill out this form. Can you explain?/

M: Sure. First, write down you name and address at the top./

G: OK./

M: Then, write down your phone number on the next line./

G: All right./

M: Then, check the "I agree" box at the bottom./

G: I see. Thanks./

W: You didn't write your phone number on the form./

M: Oh. It's 305-2321./

W: I'm sorry, but can you say that again?/

M: Yes. It's 305-2321./

B: Nice to meet you. My name is Kevin, Kevin Goldman./

G: Hi, Kevin. I'm Amy Jones./

B: Amy... I'm sorry, but can you say your last name again?/

G: Sure. It's Jones, j-o-n-e-s./

G: Andy, I don't know how to set up a PIN number for my new locker./

Can you help me?/

B: Sure, Jisu. It's easy. First, press star./

Second, enter your PIN number./

Then, press star again. Got it?/

G: Wait. You're going too fast./

Can you please say that again?/

B: Sorry. First, press star./

Then, enter your PIN number./

Finally, press star again./

G: Star, PIN number, and star./

B: Right. Now, you're all set./

G: Thanks, Andy./

M: Excuse me, but can you please help me with this machine?/

G: Sure. First, you need to choose the station you're going to./

M: OK./

G: Then, put in the money./

M: OK./

G: Then, just take out the ticket./

M: Thank you very much./

G: You're welcome./

Afterimages./

Sometimes we see an object even after we stop looking at it./

For example, we can still see the headlights of a car/

even after we have closed our eyes or the car has turned away./

This happens because of afterimages./

To see what afterimages are, let's do a simple experiment./

Prepare two pieces of paper and a pencil./

On one piece of paper, draw a bird./

On the other, draw a cage./

Then tape each piece of paper, back to back, to the top of the pencil./

Now spin the pencil quickly between your hands./

If you spin it quickly enough, you can see the bird in the cage./

Do you want to know how this happens?/

When you see something,/

your eyes send the information to your brain,/

and your brain understands it as an image./

The image stays a little bit longer in the brain than in the eye./

This is why you have afterimages./

Because of afterimages,/

if you spin the pencil fast enough in the experiment above,/

the images of the bird and the cage will blend into one./

Afterimages also make animated pictures possible./

When you see Peter Pan flying on TV,/

he isn't actually flying./

He is just a drawing on paper./

To create the impression of movement,/

you need many drawings of Peter Pan./

Each drawing has to be a little bit different from the one before it./

If these drawings are shown to you fast enough,/

one image blends into the next,/

and this gives the impression of movement./

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