back
user profile

ColinWright

136,193karma·18,658submissions·December 14, 2009
about
If you want to contact me, find me on the web. I am especially interested in math, juggling, programming, and education, and since there are other people with my name you'll probably need to include at least one of those terms in any search.

I was once a prolific contributor and commenter, but no more. I go through bouts of submitting stuff, but then go and disappear for lengths of time. If there is something you'd like me to see or comment on, you can email me. Don't ask me to upvote things. If it is interesting (to me) then I will.

Submissions do not imply endorsement.

My spam filtering is pretty severe, but I've put the word "Dysprosium" on the allow-list - quote that and your email will get through.

I used to have an email here but it got harvested by spammers - I'm looking at you, mbientlab.com - so it has been removed. This is a temporary one:

HN_a7dab8S4@solipsys.co.uk

Email sent there and quoting the element name will pass my spam filters. After that we can use "proper" email addresses.

recent activity (18,658 total)
comment
Exactly that ... for a given pixel, reducing the existing level/brightness by some value, the default is usually 1, or a fixed percentage.
6mo ago·view thread
comment
Hmm. This was a long time ago, so we didn't have GPUs or fancy rendering h/ware. We addressed every pixel individually. So a radar image was painted to the screen, and then the next update …
6mo ago·view thread
comment
I honestly should sketch out the talk anyway. I haven't seen anyone else bring together the proof that sqrt(2) is irrational, and the Continued Fraction method of factoring. Yeah, maybe I'l…
6mo ago·view thread
comment
That's not my channel. Alas, my name is fairly common, and there are some proper whackos who publish widely. I only have one video in my channel ... never really got going, but I keep promising …
6mo ago·view thread
comment
"Never interrupt your enemy when he is making a mistake." -- Napoleon.
6mo ago·view thread
comment
Click on the link to read about this: 403 ERROR The request could not be satisfied. Request blocked. We can't connect to the server for this app or website at this time. There …
6mo ago·view thread
comment
One of the talks I give has this in it. The talk includes Continued Fractions and how they can be used to create approximations. That the way to find 355/113 as an excellent approximation to pi…
6mo ago·view thread
comment
Yes. We used it for the structures underlying the digital fade algorithm for marine radar images. It's probably no longer "Commercial In Confidence" ... I should probably write it up s…
6mo ago·view thread
comment
Still reading the article, but early on it says: "Also, is it weird that I still remember the specs of my first computer, 22 years later?" My first computer was a TRS-80 Model 1, 1.78 Mz Z80…
6mo ago·view thread
comment
Broadly speaking, you want it as tall as possible, usually we're talking a few stories high, so 20m or so. Without the attracting masses on either side you can set it swinging and measure the per…
6mo ago·view thread
comment
Charlie Eggins recorded the first ever sub-12-second 3-blind solve in competition (11.673s). So he started the timer, looked at a scrambled cube for about four seconds, nodded his blindfold into place…
7mo ago·view thread
comment
https://web.archive.org/web/20260107201815/https://www.sltri... …
7mo ago·view thread