Commit 2be4956d by Jay Belanger

### * calc.texi (Basic Operations on Units): Discuss temperature

`  conversion (`u t') alongside with other unit conversions ('u c').`
parent fd8dea03
 2011-10-13 Jay Belanger * calc.texi (Basic Operations on Units): Discuss temperature conversion (`u t') alongside with other unit conversions ('u c'). 2011-10-12 Glenn Morris 2011-10-12 Glenn Morris * ert.texi: Whitespace trivia to make main menu items line up better. * ert.texi: Whitespace trivia to make main menu items line up better. ... ...
 ... @@ -27748,6 +27748,19 @@ the above example, entering the units expression @samp{100 km/hr} and ... @@ -27748,6 +27748,19 @@ the above example, entering the units expression @samp{100 km/hr} and typing @kbd{u c @key{RET}} (without specifying new units) produces typing @kbd{u c @key{RET}} (without specifying new units) produces @samp{27.7777777778 m/s}. @samp{27.7777777778 m/s}. @kindex u t @pindex calc-convert-temperature @cindex Temperature conversion The @kbd{u c} command treats temperature units (like @samp{degC} and @samp{K}) as relative temperatures. For example, @kbd{u c} converts @samp{10 degC} to @samp{18 degF}: A change of 10 degrees Celsius corresponds to a change of 18 degrees Fahrenheit. To convert absolute temperatures, you can use the @kbd{u t} (@code{calc-convert-temperature}) command. The value on the stack must be a simple units expression with units of temperature only. This command would convert @samp{10 degC} to @samp{50 degF}, the equivalent temperature on the Fahrenheit scale. While many of Calc's conversion factors are exact, some are necessarily While many of Calc's conversion factors are exact, some are necessarily approximate. If Calc is in fraction mode (@pxref{Fraction Mode}), then approximate. If Calc is in fraction mode (@pxref{Fraction Mode}), then unit conversions will try to give exact, rational conversions, but it unit conversions will try to give exact, rational conversions, but it ... @@ -27818,19 +27831,8 @@ The @kbd{u b} (@code{calc-base-units}) command is shorthand for ... @@ -27818,19 +27831,8 @@ The @kbd{u b} (@code{calc-base-units}) command is shorthand for stack into @code{base} units. If @kbd{u s} does not simplify a stack into @code{base} units. If @kbd{u s} does not simplify a units expression as far as you would like, try @kbd{u b}. units expression as far as you would like, try @kbd{u b}. The @kbd{u c} and @kbd{u b} commands treat temperature units (like Like the @kbd{u c} command, the @kbd{u b} command treats temperature @samp{degC} and @samp{K}) as relative temperatures. For example, units as relative temperatures. @kbd{u c} converts @samp{10 degC} to @samp{18 degF}: A change of 10 degrees Celsius corresponds to a change of 18 degrees Fahrenheit. @kindex u t @pindex calc-convert-temperature @cindex Temperature conversion The @kbd{u t} (@code{calc-convert-temperature}) command converts absolute temperatures. The value on the stack must be a simple units expression with units of temperature only. This command would convert @samp{10 degC} to @samp{50 degF}, the equivalent temperature on the Fahrenheit scale. @kindex u r @kindex u r @pindex calc-remove-units @pindex calc-remove-units
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