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Methods used to measure length of video tape Integrate over path Wrap around 2 chairs Wrap around a box Speed from manual Wrap around outstretched hands.

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Presentation on theme: "Methods used to measure length of video tape Integrate over path Wrap around 2 chairs Wrap around a box Speed from manual Wrap around outstretched hands."— Presentation transcript:

1 Methods used to measure length of video tape Integrate over path Wrap around 2 chairs Wrap around a box Speed from manual Wrap around outstretched hands Looked it up on the web Called the manufacturer Let it out of a moving car, used car odometer Weighed 20 ft Looked on the box Walked a city block Wrapped around bike tire, then used bike trip computer while turning pedal Unwound over Washington Bridge, then paced off Back and forth down long hallway, counted floor tiles Marked tape, ran 1 minute through VCR, marked tape, unwound tape and measured between 2 marks Measured thickness of 50 layers, computed area

2 POOR METHODS GOOD METHODS

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9 “LIE FACTOR” = 14.8

10 “LIE FACTOR” = 59.4


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