Activities/Sliderule: Difference between revisions
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== Where to get Sliderule == | == Where to get Sliderule == | ||
[http://activities.sugarlabs.org/en-US/sugar/addon/4222 Activity] | [http:// | [http://activities.sugarlabs.org/en-US/sugar/addon/4222 Activity] | [http://github.com/sugarlabs/slideruler Source] | ||
== About Sliderule == | == About Sliderule == | ||
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The Custom Slide Toolbar is used to make a custom slide. From left to right: | The Custom Slide Toolbar is used to make a custom slide. From left to right: | ||
* position function of x used to calculate the horizontal position of each mark along the slide or stator (the range of this function should be 0 to 1) | * position function of x used to calculate the horizontal position of each mark along the slide or stator (the range of this function should be 0 to 1) | ||
* result function of x used to read a value from the slide or stator at the cursor or reticule (usually the inverse of the position function) | |||
* label function of x used to calculate a label for each mark (often identity) | * label function of x used to calculate a label for each mark (often identity) | ||
* the minimum value of x used in the functions domains | * the minimum value of x used in the functions domains | ||
* the maximum value of x used in the functions domains | * the maximum value of x used in the functions domains | ||
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In the values shown in the illustration of the Custom Toolbar are used to generate a C (log) slide: | In the values shown in the illustration of the Custom Toolbar are used to generate a C (log) slide: | ||
:the position is determined by ''f''(''x'') = ''log''(''x'', 10) | :the position is determined by ''f''(''x'') = ''log''(''x'', 10) | ||
:the result (the inverse of ''f''(''x'')) is ''f<sup>-1</sup>''(''x'') = ''pow''(10, ''x'') | |||
:the label is ''g''(''x'') = ''x'' | :the label is ''g''(''x'') = ''x'' | ||
:the domain is from 1 to 10 | :the domain is from 1 to 10 | ||
:the step size is 1 | :the step size is 1. | ||
=== The keyboard shortcuts === | === The keyboard shortcuts === | ||
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=== Square === | === Square === | ||
You use the A slide and D stator to square number. (A is a log-squared scale.) Simply position the reticule of number you want to square on the D stator and read the result off of the A slide. | You use the A slide and D stator to square number. (A is a log-squared scale.) Simply position the reticule of number you want to square on the D stator and read the result off of the A slide. Remember to properly estimate the proper decimal point for your result. '''Note''': the slide and stator must be aligned in order to calculate the square of a number. | ||
''e''<sup>2</sup> = 7.4 | ''e''<sup>2</sup> = 7.4 | ||
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== A tutorial == | == A tutorial == | ||
[[File:Slideruletute.pdf]] 355 kB | [[File:Slideruletute.pdf]] 355 kB chapter 1 | ||
[[File:Slideruletute.odt]] 429 kB (may not display | [[File:Slideruletute.odt]] 429 kB chapter 1 (may not display diagrams in Write) | ||
[[File:Slideruletute-ch2.pdf]] 325 kB chapter 2 | |||
[[File:Slideruletute-ch2.odt]] 287 kB chapter 2, the custom sliderule (may not display diagrams in Writes) | |||
== Just for fun == | == Just for fun == | ||
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You can [https://bugs.sugarlabs.org/query?status=accepted&status=assigned&status=new&status=reopened&component=Sliderule view the open tickets here]. | You can [https://bugs.sugarlabs.org/query?status=accepted&status=assigned&status=new&status=reopened&component=Sliderule view the open tickets here]. | ||
[[Category:Activities]] | |||