Recent comments in /f/Futurology

Gari_305 OP t1_j8hvwor wrote

From the Article

>In a recent study, a German-Georgian team of researchers proposed that advanced extraterrestrial civilizations (ETCs) could use black holes as quantum computers.

Also from the article

>The research was conducted by Gia Dvali, a theoretical physicist with the Max Planck Institute for Physics and the physics chair at Ludwig-Maximilians-University in Munich, and Zaza Osmanov, a professor of physics at the Free University of Tbilisi, and a researcher with the Kharadze Georgian National Astrophysical Observatory and the SETI Institute.
>
>The paper that describes their findings recently appeared online and is being reviewed for publication in the International Journal of Astrobiology.

Lastly from the article

>The research was conducted by Gia Dvali, a theoretical physicist with the Max Planck Institute for Physics and the physics chair at Ludwig-Maximilians-University in Munich, and Zaza Osmanov, a professor of physics at the Free University of Tbilisi, and a researcher with the Kharadze Georgian National Astrophysical Observatory and the SETI Institute.
>
>The paper that describes their findings recently appeared online and is being reviewed for publication in the International Journal of Astrobiology.

−9

Devadander t1_j8htplc wrote

Lol and teslas hit baby strollers. Super cruise is going to be pretty good. Don’t discount it yet.

Gotta remember, all of these other car manufacturers have to put out a functioning product. Tesla gets away with having their owners beta test software. Mercedes owners won’t put up with that. As these self driving features become available on established marquees, it’ll be quite interesting to see how Tesla keeps up

2

-The_Blazer- t1_j8htjzl wrote

There are 3 aspect to this: need, technology, and capacity.

Hyperloop is basically a maglev, but much smaller, with life support, inside a tube, that must be evacuated from air.

In terms of need, the vacuum tube is not actually needed. We already know you can do 600 Km/h with maglev just fine and with technological advancements you could probably push that to 900 Km/h if you really, really wanted to and the electricity was cheap enough. (this causes goemtric issues with the track but that's another point, and also one hyperloop conveniently does not address)

In terms of technology, pumping a thouosands-Km-long tube to be even a partial vacuum is horrifically hard to do. In addition, the tube creates a bunch of additional hazards.

In terms of capacity, one of the advantages of trains over planes is that because they have a much higher capacity, they can actually do mass transit at scale instead of becoming saturated like airports often are (you know how you take the plane and you randomly have to wait 20 minutes on the taxiway? That). Hyperloop has even less capacity than a plane by comparison. Economics also mean that lower capacity = higher ticket prices.

All this for an even higher cost than maglev (since the tech is maglev with a vacuum tube), which is in turn more expensive still than regular high speed rail.

9

-The_Blazer- t1_j8hsz00 wrote

> Nah. It's a glass tube with a mag Lev vehicle inside of it. > > > > Half the price of normal high speed rail

How is maglev, which is already more expensive than HSR, covered with an extremely long glass tube cheaper than HSR?

I'm fairly pro-maglev, but I don't see the point of pumping up the cost by covering it. In the urban areas where this would have some utility in shielding the populace from the 600 Km/h noise and wind you probably can't go very fast to begin with.

6

bripi t1_j8hr222 wrote

No system exists that is without flaw or degredation. No system is 100% efficient. Recycling involves loss of some kind, loss that cannot be recovered. In any machine there is friction, and friction is always lost efficiency. No matter what you do, in the end you always lose eventually.

1