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wildbilln864

(13,382 posts)
Sat Feb 28, 2015, 02:34 PM Feb 2015

Make the measurements yourself!

In discussing my measurement of the freefall of Building 7 with one (reluctant) physics professor, the professor at one point protested, “I’ll take your word for it, for the sake of argument, but I have no way to confirm your claims for myself.”

That comment astounded me because I see the motion of the building as such a straightforward measurement. But upon reflection I recalled all the time and energy and collaboration that went into gathering all the necessary materials and information for the measurement: a suitable video, an appropriate software tool to make measurements on the video, calibration data, knowledge of video formats, etc. I realized that even with the requisite knowledge base and skill set, it would take a very motivated person to reproduce my measurements. I therefore collected together all the bits and pieces that went into my measurement and present them here as a kit that can be used by a physics teacher or handed to a motivated physics student as a lab assignment or project or science fair entry. The skills that will be learned in the process will serve a physics student well for other projects that might involve using video as a measuring tool.

All the tools and material needed are free and downloadable here:
http://911speakout.org/?page_id=222

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