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A meter is the SI Unit for length. The definition of a meter has changed dramatically over the years. A meter is approximately a yard. Many students look at a meter stick that has a yard stick on the opposite side - and get confused. Use the correct side!

KHS Students: Read page 121 of your text and find out just how much the definition of a meter has changed since the early definition that it should be one ten-millionth of the distance from the North Pole to the equator. Since 1983, the definition is that a meter is the distance light travels in 1/299,792,458 second.

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  • Francisco Garcia posted an update:   5 hours, 58 minutes ago · View

    I need help, what were the 4 lessons?



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The Chemistry Book is a social networking site for chemistry learners and enthusiasts. The site began as a wiki written for high school students located in California. There are over 550 articles, budding glossary, tutoring area, and course calendars.