Home School Life Journal

Home School Life Journal
"Let us strive to make each moment beautiful."
Saint Francis DeSales
painting by Katie Bergenholtz

Summer Fun # 64: Make A Lightbulb Light Up Without a Socket

For this demonstration, fill a microwave-safe cup or glass half full with water...
place a lightbulb, socket-end down, into the glass.
If your microwave has a rotating tray, take it out. Put the glass with the lightbulb in it as close to the center of the microwave as you can and close the door. Set the timer for 45 seconds. (Any longer is a safety hazard.)


Before removing the glass and lightbulb from the microwave, allow them to cool.

Science Sunday

The Science Behind It?
The microwaves work the same as electrical current and excites the tungsten filaments inside the bulb.
The glass of water protects the lightbulb from the full effects of the microwaves, however, so the bulb does not explode.

3 comments:

  1. Oh man, you're a brave woman. I accidentally microwaved something metal for a few seconds and that did not go well........

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    Replies
    1. Ticia, I've always been curious about metal being microwaved! Exactly what happened?

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  2. These are such cool experiments! I wish I knew of them when my children or even grandchildren were young enough to enjoy them!

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