jasmcole

8 ms·

1. 31.▲
   by jasmcole 7y ago

   https://jasmcole.com Started 6 years ago now, occasional investigations into maths, physics, and data.
2. 32.▲
   by jasmcole 7y ago

   I went deep down the art of code rabbit hole on YouTube, a great channel for learning about shaders. I wrote this blog post on writing interactive SDF shaders: https://jasmcole.com/2019/10/03/signed-distance-f
3. 33.▲
   Optimally Wrapping a Christmas Present(jasmcole.com)

   1 points by jasmcole 7y ago|0 comments
4. 34.▲
   by jasmcole 7y ago

   One application (which I used to work on) is generating electric field strengths beyond the 'Schwinger limit'. This is a field strength below which various QED processes are exponentially damped, such as electron-positron pair pro
5. 35.▲
   by jasmcole 7y ago

   Pre print from arXiv: https://arxiv.org/abs/1812.05357
6. 36.▲
   Interactive data visualisations on UK funding rounds(uktechdata.count.co)

   3 points by jasmcole 7y ago|2 comments
7. 37.▲
   by jasmcole 7y ago

   Very sad. Reading datagenetics inspired me to start my own blog, which has been very fun over the years. Thanks Nick for the great posts and inspiration!
8. 38.▲
   by jasmcole 7y ago

   6371km is the radius of the earth :)
9. 39.▲
   by jasmcole 8y ago

   For long simulations I'd like to increase the timestep, but then RK4 becomes less accurate. For the n body problem, do symplectic integrators work well?
10. 40.▲
    by jasmcole 8y ago

    The experiment described here was performed by a couple of groups independently earlier this year. Data is being analysed, so fingers crossed!
11. 41.▲
    by jasmcole 9y ago

    These results come from the National Ignition Facility, the world's biggest ICF experiment.
12. 42.▲
    by jasmcole 9y ago

    I will do after I've cleaned it up, it will appear at the blog repository at: https://github.com/jasmcole/Blog
13. 43.▲
    by jasmcole 9y ago

    Thanks! I am in the process of writing a wordpress to LaTeX converter, so watch this space...
14. 44.▲
    by jasmcole 9y ago

    I'm not even exaggerating. If you're into KSP, I think you'll like the book!
15. 45.▲
    by jasmcole 9y ago

    Thank you, that's very kind. I'd like to post more often, but real life does tend to throw a spanner in the works!
16. 46.▲
    by jasmcole 9y ago

    Hey, author here. As several of you have noted, there are a lot of tweaks to speed this simulation up - making it 2D increases (unphysically) the collision rate, the particles have overly large collision radii, and the fragmentation thresho
17. 47.▲
    The chaotic dynamics of my extractor fan(jasmcole.com)

    2 points by jasmcole 9y ago|0 comments
18. 48.▲
    by jasmcole 10y ago

    Very nice! Are you importing transit data into a 3D renderer, or did you write the rendering code yourself?
19. 49.▲
    by jasmcole 10y ago

    Here's my take on the same problem (+ animations) https://jasmcole.com/2017/01/02/the-travelling-artist-proble... There are also more details+references on the algorithm which spreads the points evenly a
20. 50.▲
    The Art of the Travelling Salesman(jasmcole.com)

    2 points by jasmcole 10y ago|0 comments
21. 51.▲
    by jasmcole 10y ago

    As both a pub-loving UK citizen and someone who has just finished the excellent book 'In Pursuit of the Travelling Salesman' (written I think by the authors of this article), this is a highly timely submission!
22. 52.▲
    Deconvolving noisy images using regularisation(jasmcole.com)

    1 points by jasmcole 10y ago|0 comments
23. 53.▲
    by jasmcole 10y ago

    Thanks for your interest. I'd like a map of earnings by postcode, then I can plot as a function of average yearly wage which would reduce the height of the London mountain in this dataset. There are a lot of goodies in the data provide
24. 54.▲
    by jasmcole 10y ago

    Thanks. The video was quite fun to make, I might write up the process in the future. Essentially I made a surface mesh in Matlab, exported to .stl format, which is then importable in Blender. The city names are text objects with a rotation
25. 55.▲
    by jasmcole 10y ago

    Thanks! I don't work at all with this type of data though (I'm a physicist), so my interpretation of it will be mostly guesswork I'm afraid (though I welcome learned comments!). The divergence in house prices seems to be real
26. 56.▲
    by jasmcole 10y ago

    Author here, please feel free to ask any questions.
27. 57.▲
    by jasmcole 11y ago

    Hi, I wrote this article about a year ago on my blog. Thanks for posting it!
28. 58.▲
    by jasmcole 11y ago

    There is really nothing physically interesting in this - a two lens telescope (in the geometric optics approximation) admits a point where rays from the object are focussed. It's not surprising then that there are regions in between wh
29. 59.▲
    by jasmcole 11y ago

    What's the 'advanced math' used for the moving average? Some form of convolutional filter?
30. 60.▲
    by jasmcole 11y ago

    Nice. I had a quick look at this effect in an old blog post, it's surprisingly simple to derive the existence of waves in traffic flow (given some simplifying assumptions) http://jasmcole.com/2014/09/14/o