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Study Finds Twist To The Story Of The Number Line
2012-04-26 10:15:48

Yupno of Papua New Guinea provide clues to the concept's origins — and suggest familiar notion of time may not be straightforward, either Tape measures. Rulers. Graphs. The gas gauge in your car, and the icon on your favorite digital device showing battery power. The number line and its cousins — notations that map numbers onto space and often represent magnitude — are everywhere. Most adults in industrialized societies are so fluent at using the concept, we hardly...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.