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• #### Mr. Wizard's World: The 4th Dimension?

Mr. Wizard explains the fourth dimension: time. He mentions that length, width, and height are the three dimensions we're familiar with and that time is another dimension.

• #### Numb3rs: Fractal Dimension Analysis

Amita uses fractal dimension analysis to find out if a signature is forged. Charlie explains how fractal dimension works.

• #### Numb3rs: Fractal Dimension

In this clip, Charlie uses fractal dimension to detect forged comics. He argues that forgeries take longer to draw, causing ink to seep out in a way that increases "wrinkliness", which can be measured by fractal dimension.

• #### Square One Television: Finding the Area

Square One TV shows kids how to calculate area using a problem. Red Harry wants to make a statement with his artwork, but needs to figure out the dimensions of his art frame.

• #### Square One Television: Popcorn Volume

When a man decides to doubles the dimensions of his popcorn, he's surprised to see the volume has increased eightfold.