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CAN NOSES SEE?

For this activity, we need a whole bunch of jars, in graduated sizes, each with a tight-fitting, screw-type lid. We start with a tall jar that contains a fragrant liquid.

1. Pour half of the liquid from this jar into an empty jar (this is the second jar). Cap the first jar tightly, and set it aside.

2. Pour half of the liquid that is left into another empty jar. Then cap the second jar.

3. Pour half of the remaining liquid into a fourth jar. Cap the third jar.

4. Pour half of the remainder into a fifth jar and cap the fourth jar.

5. Then pour half of the liquid in the fifth jar into a sixth jar and cap the fifth jar.

6. Continue in this way until you cannot divide the liquid any further.

Take some guesses as to how you could divide the liquid into even smaller particles?

One way to do this is to pour a small bit of the liquid into a perfume atomizer, and pump a fine spray into the air.

Can you see the particles? If you cannot see them, how do you know they are there?

How can the sense of smell "see" the particles of liquid better than the eye?

 
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