Daily Archives: May 8, 2014


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Significant figures are an expression of the uncertainty of a number. All measurements have some degree of uncertainty in their value. This can be caused by the skill of the measurement taker or the tool used. For example, if you are in a chemistry lab and you need to add […]

Significant Figures Rules and Uncertainty   Recently updated !


Woodpeckers are interesting creatures in that they can repeatedly bash their heads against a tree hundreds of times a minute, decelerating at each impact on the order of 1,000 times the force of gravity and not turning their brains to jelly. Researchers at Mississippi State University took a closer look […]

Woodpecker Beak Shock Absorbers