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Thursday, December 6, 2012


A five year old demonstrated this to me on a front porch with a jelly jar. The jar did not fall off the railing but I do suggest using a wine glass. The cheaper, the better it will resonate.

Use a wine glass because you can hold the glass by the stem. When I taught school, I got quite a collection at yard sales. Do warn children to not go home and use mom's fine crystal. One child broke an expensive wine glass at home doing this.

1. Partially fill wine glass with water.
2. Dip index finger in water.
3. Rub the rim of the glass with finger until the glass vibrates. It makes a pleasant sound.
4. You can have students compare the sound of different wine glasses and different water levels.

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