mojomark

28 ms·

301.
by mojomark 5y ago
Good, thoughtful, comment, but the statement that ammonia is more "energy dense than H2 is innacurate and misleading. Ammonia has very slightly higher Volumetric Energy desnity than H2, but it has an extremely lower Gravimetric (mass)
302.
by mojomark 5y ago
I'd imagine that if Musk tried to quietly sell off 10% of his shares, that'd probably trigger a massive sell-off due to shareholder fears that something was awry within Tesla. So, vetting the idea in public ahead of time is a good
303.
by mojomark 5y ago
I never understood why pulsing a laser yeilds higher power (and is less eye safe) than constant laser source. If someone can explain I'd be greatful.
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by mojomark 5y ago
> Nobody else has written about it. > I suspect though Mr. White might possibly prefer to go back to his private life and never hear about Wikipedia again. Except that the image was used in a Discovery channel doc on the killer - whic
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by mojomark 5y ago
I highly recommend the documentary "Fantastic Fungi" [1] (2019) to anyone interested in this topic. Can be viewed on Netflix. It will give you a good sense of what's driving the interest in this field. 1. Fantastic Fungi htt
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by mojomark 5y ago
> (1) Autonomy in maritime is not to replace seafarers, the navigation crew is less than 30% of the crew. As someone who works in the autonomous ship space now and a prior merchant mariner, I agree with a lot of what you state, except fo
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by mojomark 5y ago
Watch [1] @ 1:08. Is it really a mystery as to why canines tilt their heads when spoken to? It's always seemed self-evident that they are hearing a sound that is of interest and they are evaluating to see if it's useful informatio
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China Tells Evergrande's CEO to Pay Down Debt with Personal Funds(wsj.com)
4 points by mojomark 5y ago|2 comments
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by mojomark 5y ago
Technical sales. It's not easy to find people who are personable but can also explain the underlying tech clearly to potential customers... and the best tech in the world isn't with a hill of beans if it isn't being used by s
310.
by mojomark 5y ago
I've never run a kickstarter campaign, but I've worked with plenty of startups, two in the 3D imaging space. Here's my 2 cents (for what it's worth): 1.) Your video is too technical. You may have "dumbed it down&quo
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by mojomark 5y ago
> > However, money is also a concrete economic good in and of itself. Just playing devil's advocate... if you're stranded on an deserted island with a suitcase full of US $100 bills or perhaps flash drives with bitcoin in th
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by mojomark 5y ago
> When a computer can accurately predict (90%~) sexuality, criminal proclivity etc through facial features then what exactly is 'pseudoscience' about it? 90% is fairly poor regression model success rate. If you're in the 1
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Watch “How an Ising machine solves the traveling salesman problem” on YouTube(youtube.com)
1 points by mojomark 5y ago|0 comments
314.
by mojomark 5y ago
> The Michelin "Tweel" IP was actually acquired when Michelin bought BF Goodrich 31 years ago. If thw core patent is 31 years old then that means it's been in the public domain for 11 years. Anyone should be able to make
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by mojomark 5y ago
Some people do care about authenticity though, hence the genesis of the OP's work to try and authenticate and it's why people still read news papers vice trusting their clickbait Google "news" feed. I'm just saying
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by mojomark 5y ago
> In fact, logic can do things probability theory can’t. However, despite much hard work, no known formalism completely unifies the two! Even at the mathematical level, the marriage of rationality and empiricism has never been fully cons
317.
by mojomark 5y ago
Just because it's been "tried" before doesn't mean the concept is invalid now. The underlying physics of wing in ground effect remain unchanged, but our technology has advanced. We now have new missions, new engines and
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by mojomark 5y ago
"it takes every kinda people To make what life's about" - Robert Palmer. Sure, it's in poor taste while there are more humane ways to spend one's capital. I don't know, maybe cleaning up the oil-polluted shores
319.
by mojomark 5y ago
See my comment to answer this question. Volumetric power density impacts are neglected in the OP's 'back of the napkin' estimate comparison. As you suspect, you need to account for the motor size and the specific application
320.
by mojomark 5y ago
> The web page claims that the electric motor can output 2000 kW at 10 kW/kg. > For comparison, Europrop TP400... > 8200 kW 1938 kg (= 4.1 kW/kg) FROM SITE: >2 MW - 2x improvement in [ ]size[ ] over megawatt scale moto
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by mojomark 5y ago
Interesting comment, so I looked it up. It appears that the switch to containerization over bulk grain transport is a relatively recent transition push(1). 1. https://www.hellenicshippingnews.com/containerized-shipment-...
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by mojomark 5y ago
> If your team quits then you've failed as a manager. While it's certainly possible the manager is poor, this isn't necessarily true. I'm 43, and have overseen about 10 teams of various sizes in my career - generally
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by mojomark 5y ago
Couldn't reputable photo/video authors just publish content as an NFT? If the NFT is not traced back to a reputable source, then the content is deemed unreliable.
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History’s Largest Mining Operation Is About to Begin (2020)(theatlantic.com)
1 points by mojomark 5y ago|0 comments
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by mojomark 5y ago
My wife has revoked my right to bare toes when going out to eat. It's just the right thing to do for civilization.
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by mojomark 5y ago
DARPA is interested in the WIG[1] craft (probably lobbied by Boeing, but that doesn't necessarily make it a bad idea for defense investment). This solicitation reads more like a plane that can swim vice a ship that can fly. I always wo
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It Just doesn't Matter (1979)(youtube.com)
2 points by mojomark 5y ago|1 comments
328.
by mojomark 5y ago
> You dont necessarily need to charge the Wall Street CEOs. You can charge the Senior Managing Director of Structured Products. You can delegate authority, not responsibility. This fundamental rule of hierarchical organizations is why CE
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by mojomark 5y ago
> end of the day, hydrogen is always going to cost more than the energy source that was used to produce it. What your failing to account for is a.) the fact that Hydrogen (and Oxygen) used with fuel cells is effectively a battery, and b.
330.
by mojomark 5y ago
>...Power. Batteries more specifically. We just don't have a way to power anything for very long that doesn't have a cable attached to a wall attached to a power station... To be clear (not to be snide, just to improve clarity)

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