Recent content by Rive
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Kitten raising advice
Useless. They learn fast, and after a week those bells won't give a sound during hunts anymore (but they can actually endanger the cat, just as those flea-collars can). By my opinion the key point of that article is, that: Those areas were never meant to be wildlife habitats. Those cats are...- Rive
- Post #48
- Forum: Biology and Medical
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Method of storing energy on the Moon
I have to wonder how far is locally processed basalt from 'best materials' ...- Rive
- Post #16
- Forum: General Engineering
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Method of storing energy on the Moon
The Moon cannot really offer much, but there is one serious advantage (compared to above-LEO space stations): there is enough local material for effective radiation shielding. If it'll be the Moon for any long term presence, then some kind of 'underground' will be on the table.- Rive
- Post #9
- Forum: General Engineering
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News BITCOIN, Heists, Thefts, Hacks, Scams, and Losses
Then, my opinion: not yet. Just as before, the fall so far does not looks like a terminal one: rather, by the range and shape this looks more like corrective (bear trap, maybe not a finished one yet). And bear traps often followed by violent short squeezes. Ps: riding tigers is generally not a...- Rive
- Post #1,014
- Forum: General Discussion
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Method of storing energy on the Moon
One of the problems is thermal cycling. Superconductors are just about a different temperature window than batteries, but it's still a window. I can assure you that local manufacturing of that kind of inertial mass would be a real nightmare. I won't say that it's not possible or that there...- Rive
- Post #3
- Forum: General Engineering
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How useful is this if I want to begin programming?
Way back it took me quite some time to mediate wrong habits rooted in 'Basic'. That CD is lot younger than those days of mine, but still - it's hopelessly old and outdated. I would recommend picking something else, modern.- Rive
- Post #12
- Forum: Programming and Computer Science
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Can Dogs Talk Using Buttons?
But a language starts exactly with associating more and more meanings with symbols (symbolic actions): - but when there are enough symbols already they start to shape the way reality is perceived - they will affect your success (in communication) ...I do agree that it's not (yet) a...- Rive
- Post #19
- Forum: Biology and Medical
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Can Dogs Talk Using Buttons?
I'm not exactly suggesting the idea. It'll just happen. ...actually, it's not that bad of a career for a 'city dog'. Degradation of 'working breeds' in favor of primarily being pets/company is a long established process.- Rive
- Post #14
- Forum: Biology and Medical
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Can Dogs Talk Using Buttons?
That's the obscure intelligence of those breeds within their own area of expertise. For common people it's not trivial to be related with it. What I'm talking about is, that there will be a new breed (direction of selection) emerging with expertise in (buttoned) human relations.- Rive
- Post #11
- Forum: Biology and Medical
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Can Dogs Talk Using Buttons?
The linked video is not accessible for me, either... Well... On one side, by now we know that communication issues and mismatched conceptual systems makes evaluations of intelligence inherently problematic. On other side, AI just show us that actually how overplayed was the self-evaluation of...- Rive
- Post #3
- Forum: Biology and Medical
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Is it dangerous if there is a mains fault on a potable water pipe?
A lightning strike nearby can cause water taps to be 'lively' up to ~ a hundred meter distance or so. 240V... Well... I would expect a few meters: at most, a dozen. (Right near a building this can be more complicated, though.)- Rive
- Post #16
- Forum: Electrical Engineering
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Li-Ion Battery Quality Report
They are the 'not without electronics' ones. A small Li-ion battery (at 3.7V) with a charging electronics and a step-down converter (to provide the 1.5V) is fitted in the AA case. Some has dedicated charger, some has USB slot or similar, or an USB plug hidden under a cap... Pretty creative...- Rive
- Post #12
- Forum: General Engineering
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Li-Ion Battery Quality Report
Erm... That's a bit different. Li-ion cells (rechargeable) works around 3.7V Standard AA (Zinc-Carbon, non-rechargeable) is around 1.5V There is 'high energy' AA, with Li content but still not rechargeable at nominal 1.5V, though during usage they run a bit lower than standard cells...- Rive
- Post #10
- Forum: General Engineering
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Li-Ion Battery Quality Report
Erm... As far as I know there is just no suitable Li-based chemistry for the usual voltages associated with the AA format.- Rive
- Post #8
- Forum: General Engineering
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Li-Ion Battery Quality Report
On the other hand, only the cheap batteries keeping some product prices low (and this is not only about this particular battery format - the low quality and very liberal parameters of cheap batteries is a quite widespread issue).- Rive
- Post #5
- Forum: General Engineering