Re: the Universe has a hrd drive?

I have been an enthusiast of the idea that maybe the cosmos is, possesses computing properties, is a computer, acts like a computer. The short, pdf comes up with nothing concrete, merely a question. We all have questions, don't we? (smirk!) Having said this, there ain't no math in this

Re: Correction to MWI post

If dreaming is a function of biological things, where then, might be the brain of the dreamer. Can we contact the dreamer? Is there a an analog of the dreamers, neurobiology? Numbers may generate reality, or so Tegmark has asserted. Wolfram also gets this, and I ask, imbecile that I am, ok, so

Re: Correction to MWI post

On 25 Jan 2017, at 21:25, spudboy100 via Everything List wrote: Sounds like a Lôbian device is a necessity, in this facet of the MWI? If they don't form naturally, God sets us in motion so we can invent them. If you agree that 2+2=4 and the like, we don't need to invoke (any) God.

Re: Correction to MWI post

On 26 Jan 2017, at 17:07, spudboy100 via Everything List wrote: If dreaming is a function of biological things, It depends on how you define biological. If you define it like me with a theorem in arithmetic/computer-science, of intensional numbers (relative codes, like DNA, or programs)

An invisible amoral mindless metaphorical form of arithmetic, aka "God"

On Mon, Jan 23, 2017 at 5:58 AM, Bruno Marchal wrote: > > > ​>> ​ >> I don't need to explain how matter that obeys the laws of physics is able >> to perform calculations, >> ​ >> I need only observe that is can. > > > ​> ​ > No, you cannot observe that pieces of matter are

Re: Metastable metallic hydrogen propulsion

I think the intent is that metallic hydrogen alone is the fuel, as a metastable way of storing some fraction of atomic hydrogen recombination energy. H + H -> H2 at 52,000K > On Jan 26, 2017, at 20:51 , Brent Meeker wrote: > > Makes no sense. Isp it just exhaust velocity

Re: Metastable metallic hydrogen propulsion

First, the H atoms in metallic hydrogen are already bound to other H atoms, so you don't get that H+H=H2+436kJ/mol. Second, H2+O=H2O+517kJ/mol. Since a mol of water is 9 times as heavy as a mol of H2 it's sonic velocity is 3 times lower. So even if you could take advantage of the H+H

Re: Metastable metallic hydrogen propulsion

That's pretty consistent with the first paper, which only claimed a rocket chamber temperature of ~6,000K for pure metallic hydrogen. Diluting it with LH2 or water was just an idea to reduce the temperature to something more manageable, at the cost of specific impulse. Can't do the calculations

Re: Metastable metallic hydrogen propulsion

Makes no sense. Isp it just exhaust velocity which depends on the energy release per molecule of the combustion products. The energy per H2O molecule isn't going to be any different when the H came from metallic instead of liquid hydrogen. Having metallic hydrogen might make the rocket

Metastable metallic hydrogen propulsion

Something like antimatter propulsion, but much easier? Metallic hydrogen: The most powerful rocket fuel http://iopscience.iop.org/article/10.1088/1742-6596/215/1/012194/meta Hydrogen Squeezed Into a Metal, Possibly Solid, Harvard Physicists Say