cwmoore

82 ms·

961.
by cwmoore 8y ago
Thanks! My acceptance of the idea that drag might be manageable has to do with volume displacement and not surface area. A long shallow "tail" could exert orders of magnitude less drag (vis a vis surface area) than a deep heavy
962.
by cwmoore 8y ago
Point taken regarding your first line, though that sword would cut both ways I think. See https://news.ycombinator.com/reply?id=17886400 regarding the second and third.
963.
by cwmoore 8y ago
My request was not intended to be asking for sources about corrosion, but for sources as to why corrosion should be the limiting factor. I would edit it to lead with the question it asks in the third line, if it weren't now too late.
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by cwmoore 8y ago
I am not the author of the original comment, but I really like the concept. From what I understood this would be floating at surface level and would be continuously washed over by surface water. There are many good objections. It may be tha
965.
by cwmoore 8y ago
Another fun possibility: a train of such ships connected by cables, which wind and unwind generators as the distances between them change, to power propulsion. As for very good reasons why this would never work, sometimes that is beside the
966.
by cwmoore 8y ago
It wasn't my idea. My idea was that it shouldn't be dismissed for the reason you presented without a citation.
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by cwmoore 8y ago
Thank you.
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by cwmoore 8y ago
The idea that it would need to be 1000X bigger is helpful. The original poster's figure of 300m^2 does not make much sense.
969.
by cwmoore 8y ago
How big is the check and why? That's what's so hard to get an answer for when people are determined already to not to try. I mean, I guess I have Google and a long-weekend. I was hoping for someone to drop an URL that can explain
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by cwmoore 8y ago
To entertain the strongest interpretation of the idea, for purposes of understanding the reasoning: consider a very large, very slow ship trailing a towed PV array not made of steel [1], additionally harnessing sea-surface energy, and the e
971.
by cwmoore 8y ago
Agreed that the environment is vastly different than on land, that a scratch through a coating is akin to no coating at all, that anti-corrosion measures are a constant vigil in oceans. But I asked for sources treating the proposal in the o
972.
by cwmoore 8y ago
White bread is bad in saltwater too, that doesn't mean there aren't better materials for the application. https://www.quora.com/Does-aluminium-react-with-salt-water https://en.wikipedia.org/wiki&#x
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by cwmoore 8y ago
Yes, salt water is corrosive. And yet, there are metal ships with viable lifetimes. This sub-thread is a bit less helpful than I am asking for. Edit: Come on. It's not impossible to engineer for ocean use. Wave power generation: http
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by cwmoore 8y ago
Drag increases with the square of velocity [1]. Some of the ships might be able to travel much slower? I keep asking for sources because dismissals out of appeal to obviousness are so ubiquitous. [1] https://www.lmnoeng.com/
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by cwmoore 8y ago
I believe you. The difference between required and available power is large. Can you provide sources that derive/explain/summarize the figures you present so that others may better understand the reasoning?
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by cwmoore 8y ago
> Salt water destroys everything This is the statement I hear relating to all kinds of ocean-based renewable energy ideas. Sources are never provided. The problem must have to do with economic viability and the replacement/mainten
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by cwmoore 8y ago
A friend suggested to me when I was approaching an age a multiple of ten that it's good to check achievements, but not to hold yourself to any particular moment that they should have been completed by, that ages are milestones, not t
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by cwmoore 8y ago
I saw the movie. I had hoped it would be good, but I can't say that it was meaningful to me. The protagonist became a terrible shell of himself to have met his idol, and the idol himself was not a traditional hero, rather a matured o
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World Volcano Distribution(quora.com)
1 points by cwmoore 8y ago|0 comments
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Digital nomads: What is your org stack for work?
1 points by cwmoore 8y ago|0 comments
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A Stoic’s Key to Peace of Mind(brainpickings.org)
1 points by cwmoore 8y ago|0 comments
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by cwmoore 8y ago
A key sensor (Faraday cup [1]) for studying the solar wind, outside of the shield, was constructed of not one but apparently four varieties of unobtainium : Titanium-Zirconium-Molybdenum alloy, acid-etched tungsten, sapphire crystal tubes,
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Jorge Luis Borges Interview (1977)(denisdutton.com)
167 points by cwmoore 8y ago|20 comments
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by cwmoore 8y ago
I have noticed apparent typos on memorable page numbers in fiction and non-fiction books (ie. 13, 69, 100, 123, 222, etc.) that must be intentionally edited in for this purpose, but I have not kept a list. I went looking online and apparent