Difference between revisions of "Physical units/CalDims"
Jump to navigation
Jump to search
m (corrected days per year and result of the related calculation) |
|||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | + | CalDims is a flexible and easy to use calculation tool that has support for units. |
|
== The calculator's features == |
== The calculator's features == |
||
| Line 5: | Line 5: | ||
* Support for user defined basic units and derrived units |
* Support for user defined basic units and derrived units |
||
* user defined functions |
* user defined functions |
||
| − | * work sheets can be modified/saved via shell |
||
| − | * (1/3)*3 == 1 (No rounding errors) |
||
* built-in feature to simplify units |
* built-in feature to simplify units |
||
* easy unit-conversion |
* easy unit-conversion |
||
| Line 23: | Line 21: | ||
840 W h |
840 W h |
||
> #How much is it in a year (we derrive `year` first) |
> #How much is it in a year (we derrive `year` first) |
||
| − | > year := |
+ | > year := 365 d |
ok. |
ok. |
||
> 60 W * 2 h / d * 1 year | W h |
> 60 W * 2 h / d * 1 year | W h |
||
| − | + | 43799.99999999999 W h |
|
> # Bits and bytes are not defined. We do so: |
> # Bits and bytes are not defined. We do so: |
||
> \u bit |
> \u bit |
||
| Line 42: | Line 40: | ||
</haskell> |
</haskell> |
||
== Sources == |
== Sources == |
||
| + | Sources are availables at HackageDB: |
||
| − | |||
| + | http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims |
||
| − | darcs http://tel.netbeisser.de/darcs/CalDims |
||
| − | |||
| − | darcs http://tel.netbeisser.de/darcs/CalDimsApps |
||
Latest revision as of 18:47, 1 February 2009
CalDims is a flexible and easy to use calculation tool that has support for units.
The calculator's features
- Support for user defined basic units and derrived units
- user defined functions
- built-in feature to simplify units
- easy unit-conversion
Example session
> # A bird is moving 1 meter per second, how far will it be in 2 hours?
> 1m/s * 2h | m
7200 m
> # A 60 Watt electric light is burning 2 hours a day. How much energy is consumed in one week?
> 60 W * 2 h / d * 7 d | J
3024000 J
> # What's that in Watt hours?
> 60 W * 2 h / d * 7 d | W h
840 W h
> #How much is it in a year (we derrive `year` first)
> year := 365 d
ok.
> 60 W * 2 h / d * 1 year | W h
43799.99999999999 W h
> # Bits and bytes are not defined. We do so:
> \u bit
ok, but an object has changed
> byte := 8 bit
ok, but an object has changed
> kbyte := 1024 byte
ok.
> mbyte := 1024 kbyte
ok.
> 2 mbyte | -
16777216 bit
> 2 mbyte | kbyte
2048 kbyte
Sources
Sources are availables at HackageDB: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims