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Old 06-07-2003, 05:05 AM
kari kari is offline
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Emily;

Here's some info to help explain imperial units to your little one. Once you figure it out, maybe you can explain the logic behind it to me. My wife has her own similar units of length when we are on the road and she is assisting by reading maps. Her units of distance are in fingers. "Only 5 fingers and we are there"


"foot (ft or ')It may be an innovation of Henry I, who reigned from 1100 to 1135. Later in the 1100s a foot of modern length, the "foot of St. Paul's," was inscribed on the base of a column of St. Paul's Church in London, so that everyone could see the length of this new foot. From 1300, at least, to the present day there appears be little or no change in the length of the foot.

degree Fahrenheit (°F) a traditional unit of temperature still used customarily in the United States. The unit was defined by the German physicist Daniel G. Fahrenheit (1686-1736), who also invented the mercury thermometer. Fahrenheit set 0° at the coldest temperature he could conveniently achieve using an ice and salt mixture, and he intended to set 100° at the temperature of the human body. (He was off a little there; normal temperature for humans is between 98 °F and 99 °F.) On this scale, the freezing point of water (at normal sea level atmospheric pressure) turned out to be about 32 °F and the boiling point about 212 °F. Eventually the scale was precisely defined by these two temperatures. 1°F equals 5/9 °C, but in converting between scales we have to be careful to adjust the zero points as well. To convert a temperature in °F to the Celsius scale, we must first subtract 32° and then multiply by 5/9. In the other direction, to convert a temperature in °C to the Fahrenheit scale, we must first multiply by 9/5 and then add 32°. The Celsius scale is now used everywhere outside the United States, so only Americans need to remember these formulas."


This imperial units are for Cave people only
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