Difference between revisions of "Temperature converter"
From Pynomo
(New page: {{Infobox_general | name = Celcius Fahrenheit converter | image = 150px | Field1a =author | Field1b =Leif Roschier }} == Theory and background == Relation b...) |
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Relation between Celcius degrees <math>T_C</math> and Fahrenheit degrees <math>T_F</math> of temperature is | Relation between Celcius degrees <math>T_C</math> and Fahrenheit degrees <math>T_F</math> of temperature is | ||
| − | <ref><http://en.wikipedia.org/wiki/Comparison_of_temperature_scales/ref> | + | <ref><http://en.wikipedia.org/wiki/Comparison_of_temperature_scales</ref> |
<math>T_C = \frac{5}{9}(T_F-32)</math> | <math>T_C = \frac{5}{9}(T_F-32)</math> | ||
Revision as of 19:12, 5 September 2008
| Celcius Fahrenheit converter | |
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| author | Leif Roschier |
|---|---|
Contents
Theory and background
Relation between Celcius degrees [math]T_C[/math] and Fahrenheit degrees [math]T_F[/math] of temperature is [1]
[math]T_C = \frac{5}{9}(T_F-32)[/math]
Construction of the nomograph
Dual scale was constructed by using type 8 singular blocks.
References
Generated nomograph
| Celcius Fahrenheit converter | |
|---|---|
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| Generated portable document file (pdf): | File:Ex temp converter.pdf |
Source code
""" ex_temp_convert.py Celcius-Fahrenheit converter Copyright (C) 2007-2008 Leif Roschier This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. """ from nomographer import * F_start=-40.0 F_stop=90.0 C_start=-40.0 C_stop=30.0 def celcius(fahrenheit): return (fahrenheit-32.0)/1.8 F_para={ 'tag':'A', 'u_min':F_start, 'u_max':F_stop, 'function':lambda u:celcius(u), 'title':r'$^\circ$ F', 'tick_levels':4, 'tick_text_levels':3, 'align_func':celcius, 'title_x_shift':0.5 } C_para={ 'tag':'A', 'u_min':C_start, 'u_max':C_stop, 'function':lambda u:u, 'title':r'$^\circ$ C', 'tick_levels':5, 'tick_text_levels':3, 'scale_type':'linear', 'tick_side':'left', 'title_x_shift':-0.5 } C_block={ 'block_type':'type_8', 'f_params':C_para } F_block={ 'block_type':'type_8', 'f_params':F_para } main_params={ 'filename':'ex_temp_converter.pdf', 'paper_height':20.0, 'paper_width':2.0, 'block_params':[C_block,F_block], 'transformations':[('scale paper',)] } Nomographer(main_params)
