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

Summer "Bucket" List: Make A Lightbulb Light Up Without a Socket

Did you know that it is possible to make a lightbulb light up without putting it in 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.


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.


Originally posted Jun 11, 2012

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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