Monthly Archive: December 2014

Dec 09

Hunting polarized lenses in an old TV

Disassembling TV 1

          Inspired by an Exploratorium exhibit called Watching Water Freeze, we placed very thin mica between two polarized lenses to get a similar effect of rainbows.  See the video I took of the Exploratorium exhibit created by Charles Sowers. Since we have just two small polarizer sheets, we disassembled a broken LCD …

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Dec 03

Milli-Lincoln

Jeanette focuses microscope

Both classes zoomed in on pennies, wood grain, whiteboard eraser, and more.  Many US cents have President Lincoln on the front and his Washington DC Memorial on the back.  Microscopes reveal a faint outline of Lincoln sitting in the Memorial and a duck or goose climbing the stairs.  We used this activity to launch a …

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