addaon

49 ms·

961.
by addaon 3y ago
> Hydrogen ions. More specifically, protons. Well, hydronium ions (H3O+). Naked protons aren't really a thing in aqueous solution.
962.
by addaon 3y ago
Deleting data from backups (or, more often, aging out backups and deleting them wholesale) is usually a batch process. You really don't want to have to do online modification of backups... they're not really backups at that point.
963.
by addaon 3y ago
Sure, but the value of me having a second provider is usually zero… and in the cases where I realize it’s suddenly non-zero, it’s substantially non-zero. (E.g. backpacking trip extended a day or two, trying to get weather update to assess f
964.
by addaon 3y ago
Here’s the feature I want out of (an evolution of) eSIMs replacing physical SIMs. I am a Verizon customer (US). Various other providers have apparently better deals (eg T-Mobile), but I have no way to assess how coverage would be impacted f
965.
by addaon 3y ago
> Unfortunately, there is no easy way of changing B with permanent magnets. There’s the old semi-permanent magnet trick, although this only allows a couple of discrete field strengths, not continuous tuning. Basically, a neodymium (or ot
966.
by addaon 3y ago
Similar in purpose, extremely different in implementation, since PoE-supporting Ethernets (e.g. 100base-TX) are magnetically coupled, but PoDL-supporting Ethernets (e.g. 100base-T1) are capacitively coupled.
967.
by addaon 3y ago
Yeah. Basically PoE forces a common coupling (center-tapped transformer) for both power and data, which really limits not just part availability but also the design space. While the PoDL inductive power coupling and capacitive data coupling
968.
by addaon 3y ago
PoDL and PoE are both limited to SELV (< 60 V) for safety reasons, so no win there. On paper, PoE can handle more current; but PoE current is limited by center-tapped transformers, which tend to overheat if you push too far. Just due to
969.
by addaon 3y ago
> SPE has no obvious advantages for home users over something like Monoprice's Micro SlimRun cables, which are extremely thin and flexible, for example. PoDL does have real advantages over PoE. I agree that there's no home-user
970.
by addaon 3y ago
Two things I've learned working with SPE in its 100 Mb and 1 Gb configurations for a few years: 1) PoDL is substantially lighter, smaller, and simpler (though not necessarily cheaper) at 1 Gb than at 100 Mb, due to the increased freque
971.
by addaon 3y ago
Finite, but bounded only by the mass of the visible universe.
972.
by addaon 3y ago
> it's possible the quark pressure keeps the matter from compressing Why are you more comfortable with infinite pressure forces than infinite densities?
973.
by addaon 3y ago
There’s multiple levels of “theory” here. We have reasonable confidence that an ab initio simulation of a O28 nucleus would match experiment, but such a simulation is outrageously hard. We simplify things by creating an abstraction of the s
974.
“Project Moohan” Is Google and Samsung’s Inevitable Apple Vision Pro Clone(arstechnica.com)
3 points by addaon 3y ago|2 comments
975.
by addaon 3y ago
> If you tell kids you get $5k if you get an A on the state math exam, the entire family, community, school will be pushing those kids to do better on it to get the money. And punishing them if they fail. And punishing /their teache
976.
by addaon 3y ago
> I honestly don't really know of a story where a source-incompatible update killed a language. Perl, with the Perl 5 -> Perl 6 (later Raku) transition? Fortran, with the F77 -> F95 transition?
977.
by addaon 3y ago
See e.g. https://arxiv.org/abs/1601.05087 ; the area around eq 3 discusses the attractive force due to Higgs boson exchange, and the paper as a whole discusses testability.
978.
by addaon 3y ago
As I said, semantics. But Higgs bosons do mediate momentum transfer, which is about as good a definition of a force as I can come up with. See e.g. http://resonaances.blogspot.com/2016/01/higgs-force-awakens....
979.
by addaon 3y ago
Semantics is generally not the most interesting topic, but since the actual science behind the title claim is well-discussed elsewhere... We already have strong evidence of a fifth force, the Higgs force, by most accountings (assuming you e
980.
by addaon 3y ago
Besides older processes being "good enough" for embedded, many smaller micros depend on having a process that can handle embedded NOR flash. I'm not aware of any non-planar logic process that supports flash yet.
981.
by addaon 3y ago
The small players are the equivalents of VIS (Vanguard International Semiconductor) and similar. A few million 8" wafers per year, but targeting specialty processes (GaN, MEMs, etc). Cutting-edge 12" fabs are capital-intensive, bu
982.
by addaon 3y ago
Single quantum well LEDs are well-commercialized at 150 Mbps for MOST150 (that was intended to, running over POF, be cheaper than an ethernet PHY and copper); I'm not sure exactly where SQW LEDs drop off and laser diodes become the onl
983.
by addaon 3y ago
If you prefer, then, neutrinos are neutral but have an anti-particle (although it's still possible that neutrinos are Majorana particles, in which case they're their own anti-particle).
984.
by addaon 3y ago
The Victor Mono font is an example of a font that provides both. I use Italics for block comments, and Oblique for line comments. Do I need to? No. Does it look way better and make me happy? Yep.
985.
by addaon 3y ago
CSS may handle this correctly in theory, but real implementations still have challenges with fonts that provide separate oblique and italic styles. [1] https://stackoverflow.com/questions/60746818/how-can-i-use-b..
986.
by addaon 3y ago
Super-optimizers always strike me with the same feeling when seeing examples like this. On the one hand, it's awesome to be able to have truly-optimal (under chosen assumptions) code sequences for certain operations. On the other hand,
987.
by addaon 3y ago
> particles on average move faster than, say, double that frequency What does it mean to compare ("faster") a velocity and a frequency (inverse time)?
988.
by addaon 3y ago
One challenge with AMBER alerts is that they don't provide enough information for the receiver to determine if the alert reflects a credible danger to a child, or if it's a nuisance alert where the system is being abused during a
989.
by addaon 3y ago
> Does my local city have one? It's hard to answer this question without knowing your local city. My town of < 5000 people has the appropriate .gov site set up and maintained; it's one of the responsibilities of the local go
990.
by addaon 3y ago
As someone who had my first job at Apple (years ago), I can't think of a single reading of this that makes sense and lines up with my experience.

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