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Comment Re:This again? (Score 1) 480

OK, I will try to restate in my baby talk since I don't remember this correctly.

Given that you are accelerating, the appearance to you is that you are doing so linearly, and time dilation is happening to you. It could appear to you that you reach your destination in a very short time, much shorter than light would allow. To the outside observer, however, time passes at a different rate and you never achieve light speed.

Comment Where we need to get to call this real (Score 1) 480

Before we call this real, we need to put one on some object in orbit, leave it in continuous operation, and use it to raise the orbit by a measurable amount large enough that there would not be argument regarding where it came from. The Space Station would be just fine. It has power for experiments that is probably sufficient and it has a continuing problem of needing to raise its orbit.

And believe me, if this raises the orbit of the Space Station they aren't going to want to disconnect it after the experiment. We spend a tremendous amount of money to get additional Delta-V to that thing, and it comes down if we don't.

Comment Re: Gamechanger (Score 2) 514

Neither is a 10 KWH battery with something like an AC, or electric heat.
However, if you have a decently insulated house, then it will hold the temp for quite sometime.
In addition, a solar system, combined with a low energy using geo-thermal HVAC will reset the temps in the daytime.

Comment this is musk only bad idea. (Score 1, Interesting) 514

Seriously, the man is a genious, but batteries for homes is not that good, unless it is possible for utility to control them as well. At the very least, Tesla should make available server software that utility can interact with home batteries when owner allows. In seasonal weather with high demands and when solar can be blocked via clouds or length of day, it is best to allow utility to control when to charge them , or buy from them.

Comment They can win easily. (Score 1) 514

If that 10 years is maintenance free as in I don't have to do anything to it He will win big.
The biggest problem with off grid solar+wind installs is that caring for the battery bank is outside of the abilities of 80% of the population. If musk can make an off grid solar/wind install a zero effort/ zero care system where the drooling masses don't have to do anything.....

That will get the adoption rates way up, if the payback is within 5 years.

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