Changeset 38889 in project

Timestamp:

08/26/20 16:25:44 (5 weeks ago)

Author:

Ivan Raikov

Message:

unitconv doc: version history update and partial update of unit definitions to use exact arithmetic

File:

• wiki/eggref/5/unitconv (modified) (7 diffs)

wiki/eggref/5/unitconv

@@ -51 +51 @@
  ;; define units of length
  (define-unit meter     Length 1.0       m meters)
- (define-unit inch      Length 0.0254    in inches)
+ (define-unit inch      Length 254/10000 in inches)
  
  ;; define units of mass and time
@@ -69 +69 @@
 
 <enscript highlight="scheme">
- (unit-convert meter inch 1) ->  39.3700787401575
- (unit-convert meter inch 2 3 4) ->  (78.740157480315 118.110236220472 157.48031496063)
- 
+ (unit-convert meter inch 1) ->  5000/127
+ (unit-convert meter inch 2 3 4) ->  (10000/127 15000/127 20000/127)
+
  (unit-convert meter kilogram 1)
  Error: (unitconv) unit-convert : given units are of different dimensions: 
@@ -161 +161 @@
 ; {{Conductance}} : {{(/ Current Potential)}}
 ; {{Inductance}} : {{(/ (* Potential Time) Current)}}
+; '''Electromagnetism'''
+; {{Magnetic-Flux}} :  {{(/ (* Mass Area) (* (** Time 2) Current))}}
+; {{Magnetic-Flux-Density}} :  {{(/ Mass (* (** Time 2) Current))}}
+; {{Magnetic-Field-Strength}} :  {{(/ Current Length)}}
 ; '''Chemistry'''
 ; {{Concentration}} : {{(/ Substance Volume)}}
@@ -382 +386 @@
 </table>
 
+==== Units of Magnetic Flux
+
+<table style="table { table-layout: fixed; }">
+<col width="25%" /><col width="25%" /><col width="25%" /><col width="25%" />
+<tr><th>Name</th><th>Quantity</th><th>Factor</th><th>Abbreviation(s)</th></tr>
+<tr><td>tesla</td><td>Magnetic-Flux-Density</td><td>(/ kilogram (* ampere second second))</td><td>(T teslas)</td></tr>
+<tr><td>weber</td><td>Magnetic-Flux</td><td>(/ (* kilogram meter meter) (* ampere second second))</td><td>(wb webers)</td></tr>
+</table>
+
+==== Units of Magnetic Field Strength
+
+<table style="table { table-layout: fixed; }">
+<col width="25%" /><col width="25%" /><col width="25%" /><col width="25%" />
+<tr><th>Name</th><th>Quantity</th><th>Factor</th><th>Abbreviation(s)</th></tr>
+<tr><td>ampere-per-meter</td><td>Magnetic-Field-Strength</td><td>(/ ampere meter)</td><td>(amperes-per-meter)</td></tr>
+</table>
+
 ==== Units of Substance
 
@@ -442 +463 @@
 is created by procedure {{val-with-units}}:
 
- (use unitconv with-units)
+ (import unitconv with-units)
  (val-with-units 10 m) ->  #(10 #(unit meter (m meters) [Length] 1.0))
 
@@ -469 +490 @@
 === Version history
 
+; 4.0 : Using exact arithmetic [André Sá]
+; 3.3 : Additional units of time [André Sá]
 ; 3.0 : Ported to CHICKEN 5
 ; 2.6 : Bugfixes in unit* and unit/
@@ -488 +511 @@
 === License
 
- Copyright 2007-2018 Ivan Raikov.
+ Copyright 2007-2020 Ivan Raikov, André Sá.
  
  This program is free software: you can redistribute it and/or modify