Yeah, the text was confusing. They mean it has a viewing angle of 180 degrees. In other words: you can see it well from any direction as long as you're not looking at its back.
The car is constructed on a tubular steel chassis and holds four boilers which output a massive four megawatts. These force steam into the Curtis turbine engine which will produce 300bhp, enough to push the car to 200mph (in theory).
Steam engines have good efficiency?... A boiler that outputs 4 Megawatts and an engine that only manages to put 0.2 Megawatts (~300bhp) to use should tell you enough. Generally, the phase change needed for boiling water costs a lot of energy which is not regained.
I guess it first reached Mach 10 in the atmosphere, and then exited it. A scramjet engine does not work outside of the atmosphere, but it shows that it can give the craft a big impulse.
Going Mach 10 in the upper atmosphere doesn't require a lot of thrust; the density is so low that there is relatively little drag. The trick is that an airbreathing engine with a supersonic combustion chamber needs to fully mix AND combust its fuel in one or two milliseconds to use its fuel efficiently.
Mod parent up, this is exactly what I was thinking! The carbon was stored for millions of years in fossile fuels, not the oxygen. What we really need is a way to separate the oxygen from the carbon dioxide, and store the carbon. The energy we use for that process should of course not produce any CO2. This way, we back-substitute a long history of CO2 producing energy conversion methods (fossile fuels) into clean energy usage...
That's right... Furthermore, the wavelength of the microwave is not what heats water, it's the FREQUENCY: Water molecules are made to vibrate (heat) because they resonate with the microwave's frequency.
Very insightful! If you haven't yet, I suggest you read the "Manifold" series by Stephen Baxter (especially Manifold:space IIRC). It tries to deal with Fermi, each book in a different way, but with the same characters, leading to entirely different stories.
:-) Soon is a relative term, yes, but I meant in our lifetimes, maybe those of our children. I've seen studies predict that within 50 years, our reserves of fossil fuels will be depleted if the trends stay the way they are now...
First of all: Hydrogen as an energy carrier IS feasible, just not as 'attractive' as fossil fuels. Second: soon fossil fuels are not going to be an option at all, so you'd have to compare hydrogen with other alternatives for energy carriers, like synthesized alcohols. Hydrogen then becomes very attractive.
I think they are indeed talking about color range (frequency range) rather than intensity. Classic screens only produce 3 very discrete colors (red, green and blue), in varying intensities. The sensitivity of the receptors in the eye has a wider band. (that's why you can see laser light that doesn't exactly meet the peak sensitivity of your receptors). Maybe This new technology produces light with bandwidths that match the sensitivity of the eye's receptors better?
That is interesting... I'm still wondering about the danger of having an 'invisible' massive object in a trajectory that only the US know about though....
I don't think so. First of all, they have plenty of other issues to worry about when designing the exterior of a satellite, like reflective material for thermal management, or solar cells for generating power. Secondly, I would imagine that the trajectories of all satellites are available to all agencies that launch stuff into space. Imaging a soyuz crashing into one of those massive spy satellites with a relative velocity of several kilometers per second...
Gavin noted that the flexibility of open-source software in meeting specific business needs also means systems integrators and ISVs have to grapple with complexity costs
Is he suggesting that a lack of flexibility in closed source (Windows?) is a feature?
... and it would be equally polluting. If this bike uses the same technology as space ship one, it burns HTPB (similar to tyre rubber) with nitrous oxide at sub-optimal mixture ratios. Imagine the soot coming off it...
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Yeah, the text was confusing. They mean it has a viewing angle of 180 degrees. In other words: you can see it well from any direction as long as you're not looking at its back.
... and by fifteen years you mean two years, right?
Very good point!
... and another nail in the coffin of DRM.
Steam engines have good efficiency?... A boiler that outputs 4 Megawatts and an engine that only manages to put 0.2 Megawatts (~300bhp) to use should tell you enough. Generally, the phase change needed for boiling water costs a lot of energy which is not regained.
I guess it first reached Mach 10 in the atmosphere, and then exited it. A scramjet engine does not work outside of the atmosphere, but it shows that it can give the craft a big impulse. Going Mach 10 in the upper atmosphere doesn't require a lot of thrust; the density is so low that there is relatively little drag. The trick is that an airbreathing engine with a supersonic combustion chamber needs to fully mix AND combust its fuel in one or two milliseconds to use its fuel efficiently.
Mod parent up, this is exactly what I was thinking! The carbon was stored for millions of years in fossile fuels, not the oxygen. What we really need is a way to separate the oxygen from the carbon dioxide, and store the carbon. The energy we use for that process should of course not produce any CO2. This way, we back-substitute a long history of CO2 producing energy conversion methods (fossile fuels) into clean energy usage...
Why isn't this AC modded up? He's absolutely right!
...this sad facade of optimistic propaganda, despite obvious failure.... ah, I remember! You gotta love him
That's right... Furthermore, the wavelength of the microwave is not what heats water, it's the FREQUENCY: Water molecules are made to vibrate (heat) because they resonate with the microwave's frequency.
Watched Idiocracy lately?
Very insightful! If you haven't yet, I suggest you read the "Manifold" series by Stephen Baxter (especially Manifold:space IIRC). It tries to deal with Fermi, each book in a different way, but with the same characters, leading to entirely different stories.
I've heard it was even worse: Oxygen dihydride is what she drank. Everyone knows hydrides are dangerous!
:-) Soon is a relative term, yes, but I meant in our lifetimes, maybe those of our children. I've seen studies predict that within 50 years, our reserves of fossil fuels will be depleted if the trends stay the way they are now...
First of all: Hydrogen as an energy carrier IS feasible, just not as 'attractive' as fossil fuels. Second: soon fossil fuels are not going to be an option at all, so you'd have to compare hydrogen with other alternatives for energy carriers, like synthesized alcohols. Hydrogen then becomes very attractive.
How about this: China as a nation has the most powerful military in the world by far.
Wow! Did you deduce all this from the fact that it has the word "laser" in its name?
I think they are indeed talking about color range (frequency range) rather than intensity. Classic screens only produce 3 very discrete colors (red, green and blue), in varying intensities. The sensitivity of the receptors in the eye has a wider band. (that's why you can see laser light that doesn't exactly meet the peak sensitivity of your receptors).
Maybe This new technology produces light with bandwidths that match the sensitivity of the eye's receptors better?
Good arguments, thanks
That is interesting... I'm still wondering about the danger of having an 'invisible' massive object in a trajectory that only the US know about though....
I don't think so. First of all, they have plenty of other issues to worry about when designing the exterior of a satellite, like reflective material for thermal management, or solar cells for generating power. Secondly, I would imagine that the trajectories of all satellites are available to all agencies that launch stuff into space. Imaging a soyuz crashing into one of those massive spy satellites with a relative velocity of several kilometers per second...
Where are the modpoints when you need them... Please mod parent up 'Funny'!
... and it would be equally polluting. If this bike uses the same technology as space ship one, it burns HTPB (similar to tyre rubber) with nitrous oxide at sub-optimal mixture ratios. Imagine the soot coming off it...
Solar Sails are something completely different, but yes, I guess it's mainly due to the extremely high-grade solar cells they got from ESA ;-)