jbay808

17 ms·

121.
by jbay808 4y ago
Anyone working in the hard-tech sector eventually hits the point where clever ideas alone aren't enough to make progress, and you need something made that seemingly is beyond the reach of even an advanced and well-funded prototyping fa
122.
by jbay808 4y ago
I'm not sure what you mean by this. You certainly can shield a static magnetic field by using a magnetically soft material.
123.
by jbay808 4y ago
The most jarring thing is seeing the flicker when you move your eyes . If you scan your vision past a flickering light, you'll have multiple discrete images of that light left on your retina. Strobing can also be dangerous around rota
124.
by jbay808 4y ago
There are lots of Roman valves in old villas or places like Pompeii.[1] As you say, the design hasn't changed much! [1] http://www.shinjovalve.com/news/let-s-talk-about-ancient-rom...
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by jbay808 4y ago
Absolutely you can. And that's what mu-metal is designed for.
126.
by jbay808 4y ago
Not that I know any better, but wouldn't it be easier to build a mu-metal shielded enclosure to exclude the Earth's magnetic field (and anything else, eg. from nearby wiring), and then generate your own calibration field with a He
127.
by jbay808 4y ago
What does a high level of "people owning an equity stake in government" mean? Universal voting rights? UBI 'dividends'?
128.
by jbay808 4y ago
> nobody seems to care about high equity levels? By "high equity levels" do you mean high levels of government ownership of corporations? Or do you mean high equity valuations? If the latter, there are certainly some who voice
129.
by jbay808 4y ago
Shelter inflation appears to be largely demand-induced, is the largest component of the CPI, and is highly elevated. I believe this is even more true in Australia and Canada than it is in the USA.
130.
by jbay808 4y ago
Just because "brakes slow a car down" is a prediction of a simple theory of an idealized car, doesn't mean that a more complete and nuanced theory will give a different prediction. Furthermore, interest rate policy is basical
131.
by jbay808 4y ago
When rates fall, prices for assets like homes tend to rise in proportion shortly after, such that the cost to borrowers is approximately constant. The benefit of falling rates goes more to homeowners than new borrowers, even if they don&#x2
132.
by jbay808 4y ago
Absolutely they should have moved sooner, and it would have been much less painful. But I don't think there's any irrelevance to what they are doing now. Especially where shelter is concerned.
133.
by jbay808 4y ago
Rising rates means rents will likely be increased and then reduce in the medium term. Conversely, rate cuts would likely induce rents to reduce temporarily and then increase in the long term. There doesn't seem to be any easy solution
134.
by jbay808 4y ago
> Strangely, putting the laptop under load makes the coil whine go away When the load is low, a switching regulator can enter "discontinuous conduction" mode, where the inductor current periodically drops to zero. This is typic
135.
by jbay808 4y ago
Perhaps when you are unit testing a math function on a known input, for a specific platform, and there is a specific value that you are expecting it to return; anything else is an error.
136.
by jbay808 4y ago
Yes, the #3. (I should have clarified that). The new CNC machines are not the same as the ones in the book the GP linked to. CNC use requires ballscrews and roller ways, instead of leadscrews and sliding ways. As a result the machine and it
137.
by jbay808 4y ago
The document you link refers to an absolute accuracy spec of 2.3 microns. The repeatibility will necessarily be much better than the accuracy. In terms of repeatability it's almost certainly better than 1.1 microns on every axis (even
138.
by jbay808 4y ago
The 10ee was in large part made for the nuclear weapons industry, so it's a good comparison.
139.
by jbay808 4y ago
Indeed, although the machines were designed to be manually operated and not CNC. The precision is such that they never wear out, because the surfaces are geometrically accurate to the point that even the leadscrew has full-area contact agai
140.
by jbay808 4y ago
These machines were perfected in the '60s and '70s. They are not only exceptional for their ability to make a hole perfectly located and perfectly sized, but also for making it perfectly round. Their ways being perfectly straight
141.
by jbay808 4y ago
I'm guessing that this was a Moore jig grinder. There are few places in the world still capable of manufacturing a machine such as those. I'm not sure if even America still can. The fact that they go for $5000 on eBay is not a tes
142.
by jbay808 4y ago
> what's the point of vesting at all? I think usually it's intended to incentivize the employee to not quit, rather than to not be fired.
143.
by jbay808 4y ago
For what it's worth to reduce surprise/skepticism, a hydrogen atmosphere is already commonly used for annealing electrical steels (eg. motor laminations or magnetic parts). https://www.tlclam.net/annealing-process&
144.
by jbay808 4y ago
So am I. If you're going from electricity to heat for storage and back to electricity, you'll get better efficiency by using a heat pump to generate that stored heat. In general, sticking to processes that are as close to reversib
145.
by jbay808 4y ago
> Say that you used a resistor to heat the water If you're looking to maximize round trip efficiency, this is probably not a good starting point. Better to use a heat pump, as mentioned elsewhere.
146.
by jbay808 4y ago
> a non-conductive heat conducting material safer than beryllium oxide would be quite useful (As long as it's cheaper than diamond!)
147.
by jbay808 4y ago
> a particle of unknown location has a probability density uniform over all of space. No it doesn't. In that case, in which locations is the density higher and in which is it lower?
148.
by jbay808 4y ago
Private companies can still pay dividends if they want to!
149.
by jbay808 4y ago
That phone number will not necessarily get reception when travelling in foreign countries.
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by jbay808 4y ago
(FWIW, my bank does not provide any other 2FA options.)

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