Alien Ryderflex
alienryderflex.com · Personal blog · on HN since 2012
Alien Ryderflex hosts one person's programming and science pages, including a non-recursive quicksort, point-in-polygon code, the HSP color model, and optics explainers.
What HN saysHN commenters link it for an iterative quicksort, an explanation of the three-polarizer experiment, and the HSP color model as a perceptual alternative to HSV.
15HN people shared it
7linked it in comments
9stories submitted
162story points
2 years agolast shared
2012people per year2026
Most-shared posts
- 1Third-polarizing-filter experiment demystified (2004)6 people · 135 points · first shared 2018 · 86 comments on HN
- 2HSP Color Model – Alternative to HSV (HSB) and HSL4 people · 2 points · first shared 2012 · 1 comments on HN
- 3Optimized QuickSort – C Implementation (Non-Recursive)2 people · 1 points · first shared 2023 · 1 comments on HN
- 4Stereo Separation, Subwoofers, and Headphones (2008)1 people · 22 points · first shared 2015 · 11 comments on HN
- 5A Simple Point-In-Polygon Algorithm1 people · 1 points · first shared 2013 · discussion on HN
- 6The Innovator's Victory (2014)1 people · 1 points · first shared 2017 · discussion on HN
What HN people wrote when they linked it
Paul-Craft · 2023-06-13
Quicksort can be implemented iteratively, with O(1) auxiliary storage, as well: https://alienryderflex.com/quicksort/
coolgod · 2020-07-22
The three polarizing filter experiment using common sources of light can be explained perfectly without using quantum mechanics [0]. These effects only need QM to explain in the single photon regime. The polarized light from the LED display is definitely not in the single photon regime thus this experiment does not demonstrate any quantum effects. Without any quantum effects, it is much more difficult to justify the quantumness of this supposed quantum computer.
[0] http://alienryderflex.com/polarizer/
BlueTemplar · 2020-02-22
Right, I was misled... here's a good explanation why that experiment works :
http://alienryderflex.com/polarizer/
spiralx · 2018-09-26
Because a wave is a more general phenomenon than what happens on the surface of water, and waves of all kind result in interference patterns. Also, waves in the ocean certainly aren't two dimensional either, the surface "wave" just a visible manifestation of a larger system.
But the polarisation of light demonstrates more quantum effects. Put two polarising filters in front of a light at 90 degrees to each other and no light gets through them both; yet add a third filter in between at 45 degrees angle to each, and now half of the light gets through all three filters! Adding extra filters can make them let more light through, not less...
http://alienryderflex.com/polarizer/
leeoniya · 2015-01-02
> A few obvious choices are a better ranker or transforming to perception-friendly colour spaces like HSV.
HSV is not good for perceptual comparison. Try HSP [1].
[1] http://alienryderflex.com/hsp.html
brute · 2014-07-24
HUSL was already mentioned, so I bring up HSP [1]. The idea is to adjust the lightness (the L in HSL) by something which is closer to the percieved luminescence.
Also I wonder if HSL will ever manage to replace HSB/HSV as the default choice for color pickers.
[1] http://alienryderflex.com/hsp.html
AnthonBerg · 2013-09-01
I like the "HSP" color model a little bit better than HSV: http://alienryderflex.com/hsp.html