Comments by "justgivemethetruth" (@justgivemethetruth) on "Jeff Bezos explains how New Glenn rocket works | Lex Fridman Podcast Clips" video.

  1. 2:00 - When he talks about Hydrogen having a high Isp. Isp = Specific Impulse. Specific impulse, measured in seconds, effectively means how many seconds a propellant, when paired with a given engine, can accelerate its own initial mass at 1 g. The longer it can accelerate its own mass, the more delta-V it delivers to the whole system.
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  2. Love this guy ... thanks for interviewing Bezos!
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  3. I learned some new stuff from listening to JB ... so cool!
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  4. I'd bet Bezos is going to come up with an electric vehicle at some point that is better and cheaper and not as ostentatious as Tesla. I'd buy an Amazon car if and when it ever came out.
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  5. What dat? ;-)
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  6.  @ghostmateify  That came right out of Wikipedia ... so go check that. I think it's basically saying that given the same hardware, how far can you go when you put different fuels into it.
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  7. I admire Jeff Bezos more than any other American entrepreneur, and Amazon the best company in the world as far as I can see - BUT, I am not sure all this space stuff is that great. What about global warming and the atmosphere? In terms of infrastructure, it's probably more than "Amazon winnings" can afford, but I'm think it is carbon free energy infrastructure that Earth needs, not more space stuff. That means Nuclear power on a massive scale. We build enough energy infrastructure and we can do amazing things, like - 1 - Reduce the cost of power enough to allow people's homes and abodes not to have to expend huge amounts of resources, labor and capital to retro-fit all the houses in the world with insulation. That is how they originally built most existing houses - to work with cheap energy. 2 - Desalinate water so we can quit stealing from nature and killing the environment. 3 - If we have the water we will have enough energy to pump it and distribute it around the world to bring back deserts and use them for farming and nature. 4 - We have the energy to make recycling affordable, and we can use all that stuff sitting around that no one uses to offset our mining and taking from Earth natural systems. 5 - The stuff we cannot recycle we can incinerate and reduce the volume of garbage that we generate. The economies of scale and infrastructure this would create would transform the world much more effectively than manufacturing "muscle-rockets" that we do not really need.
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