Iris Ward adituv
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| Please enter the following parameters: | |
| Timestep /s: 0.1 | |
| Simulation length /timesteps: 100 | |
| Pendulum length /m: 1 | |
| Pendulum mass /kg: 0.25 | |
| Gravitational acceleration /m s^-2: 9.81 | |
| Damping constant /?: 0 | |
| Initial pendulum angle /rad: 1 | |
| Initial pendulum angular velocity /rad s^-1: -0.8 |
adituv
/ approx.dat
Created
November 14, 2013 01:50
Pendulum results with and without sin(x) ~ x. Initial conditions: timestep = 0.1s pendulum length = 1m pendulum mass = 0.25kg gravitational acceleration = 9.81 damping = 0.5 initial angle = 1 initial angular velocity: -0.8
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| # Assumed that sin(x) ~ x | |
| 0.837900 | |
| 0.626022 | |
| 0.395107 | |
| 0.171615 | |
| -0.024014 | |
| -0.178162 | |
| -0.284002 | |
| -0.340814 | |
| -0.352829 |
adituv
/ point_of_no_return.sound
Last active
December 26, 2015 15:38
Very simple converter from list of frequencies and durations to output sound wave on stdout. Pipe it through e.g. /dev/audio or aplay to actually create sound.
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| 1.25@130.8127827 | |
| 0.25@174.6141157 | |
| 0.25@164.8137785 | |
| 0.25@174.6141157 | |
| 0.75@195.9977180 | |
| 0.25@207.6523488 | |
| 1.00@195.9977180 | |
| 1.25@0 | |
| 0.25@174.6141157 | |
| 0.25@195.9977180 |
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| //The code that runs on the graphics card is included in the program here as a plaintext string | |
| //It's also possible to include it as a binary, but I don't know how to do that. | |
| const char* source= | |
| "__kernel \n" | |
| "void sum(__global float* source, __global float* dest, uint n) \n" | |
| " int idx = get_global_id(0); \n" | |
| " int iter = 2; \n" | |
| " \n" | |
| " while(iter < n && idx % iter == 0) { \n" | |
| " dest[min(iter*idx,n)] = source[min(iter*idx,n)] + source[(iter-1)*idx]; \n" |
adituv
/ Khinchin.py
Last active
December 20, 2015 03:49
A demonstration of Khinchin's constant for the continued fraction expansion of the number pi. Obviously as python has finite precision floating point, this is only an approximation, and is likely to approach an incorrect result as a grows larger.
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| #!/usr/bin/python3 | |
| from math import floor | |
| from math import pi | |
| def getExpansion(y): | |
| x = y | |
| while True: | |
| z = floor(x) | |
| yield z |
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