As I wrote earlier: recently, I lost another bike computer so I needed a new one. I decided to get a more recent version of the Sigma BC line that I've been using for the past decade: the Sigma BC 16.16 STS CAD. These seem to be on the way out now, being sold out almost everywhere. But no obvious replacement that isn't more expensive and more complex, so I'm glad I got to get one of the last ones.
Zoals ik eerder schreef: ik ben weer een fietscomputer kwijtgeraakt dus ik had een nieuwe nodig. De keus viel op een meer recente versie van de Sigma BC-lijn die ik de laatste tien jaar ofzo al gebruikte: de Sigma BC 16.16. STS CAD. Deze lijken niet echt meer beschikbaar te zijn, maar zonder duidelijk alternatief dat niet aanzienlijk duurder en complexer is ben ik blij dat ik één van de laatste van deze op de kop kon tikken.
I fell down a rabbit hole a while ago trying to come up with the definitive answer to the often-asked question "how can old movies be in HD/4K", which immediately leads to "how does film and digital resolution compare".
The answer to the first question is of course that film as a lot more resolution than standard definition TV, so just scanning the movies at a higher resolution will give you a sharper image than that old DVD or (shudder) VHS tape.
The problem with reasoning about film grain vs pixels or eyeballing images is that it's very imprecise. But we actually do have a tool that lets us compare digital vs film: the optical transfer function.
Integrated below a little tool with a slider to see for yourself where the tradeoffs are.
Read the article - posted 2023-03-29
On potaroo.net Geoff Huston wishes Happy 50th Birthday Ethernet.
Back in 2011 I wrote an Ars Technica feature about the history of Ethernet: Speed matters: How Ethernet went from 3Mbps to 100Gbps… and beyond.
Interesting to compare our different takes!
And of course Ethernet is still going strong. My oldest computers have the original 10 Mbps Ethernet adapters that I got almost 30 years ago, while my newest computer has 10 gigabit Ethernet, 1000 x faster.
Read the article - posted 2023-06-29
After looking at the SQLite Unicode behavior, it's now time to do the same for MySQL. Coincidentally, I'm currently migrating some old databases that were created in the very early 2000s to a more modern environment. I think those old databases were from the MySQL 3.x days, before MySQL gained any sort of Unicode support. Those old tables are thus still in the latin1 (ISO 8859-1) character set.
But I encountered some MySQL/Unicode weirdness...
Read the article - posted 2023-09-21