We assume that the alien is familiar with the 21 cm hydrogen line as it is one of the best observed features in radioastronomy.
I'm sure they would be able to extrapolate that information with regard to their local time units.
I'm sure they would be able to extrapolate that information with regard to their local time units.
Back to matters of gravity:
Do black holes really contain quark-gluon plasma (QGP)?
It's just possible, and there are papers being written on the possibility!
QGP and black holes can be linked, at least in theory if not in laboratory practice.
It is thought that if you can collide large nuclei with enough energy, a micro black hole could be created.
However, according to general relativity and the standard model of particle physics, we do not have anywhere near enough energy to create these in the LHC. With our current technology we’d need a particle accelerator that’s thousands of light years in diameter to make micro black holes!
Do black holes really contain quark-gluon plasma (QGP)?
It's just possible, and there are papers being written on the possibility!
QGP and black holes can be linked, at least in theory if not in laboratory practice.
It is thought that if you can collide large nuclei with enough energy, a micro black hole could be created.
However, according to general relativity and the standard model of particle physics, we do not have anywhere near enough energy to create these in the LHC. With our current technology we’d need a particle accelerator that’s thousands of light years in diameter to make micro black holes!
"Quiz:
Voyager II was launched in 1977.
Plutonium 238 Half-life is 87.7 years.
Q1 Give the date, Voyager II power supply drop will be 50%.
Q2 How much is the present drop ? "
Q1 June 2065
Q2 It is at 69.5% of launch power 46 years down the road
That' s right.
Q1 1977 + 87.7 gives 2065
Q2 2023 - 1977 gives 46
0.5 ^ ( 46 / 87,7 ) gives 0,695
This is what was expected, unfortunately, later they found less.
470 Watt at launch time 1977
315 W, 319 W at Voyager 1, 2 in 2000.
Only 67.5% instead of 83,4% expected.
This additional power decay comes from the heat to electricity converter.
Well, in engineering, if anything can go wrong, it will.
So there is more research on materials used to convert heat to electricity by Seebeck effect.
A do not know what makes this unexpected decay. Likely radiations. Neither the decaying law.
NASA knows, for sure.
Voyager II was launched in 1977.
Plutonium 238 Half-life is 87.7 years.
Q1 Give the date, Voyager II power supply drop will be 50%.
Q2 How much is the present drop ? "
Q1 June 2065
Q2 It is at 69.5% of launch power 46 years down the road
That' s right.
Q1 1977 + 87.7 gives 2065
Q2 2023 - 1977 gives 46
0.5 ^ ( 46 / 87,7 ) gives 0,695
This is what was expected, unfortunately, later they found less.
470 Watt at launch time 1977
315 W, 319 W at Voyager 1, 2 in 2000.
Only 67.5% instead of 83,4% expected.
This additional power decay comes from the heat to electricity converter.
Well, in engineering, if anything can go wrong, it will.
So there is more research on materials used to convert heat to electricity by Seebeck effect.
A do not know what makes this unexpected decay. Likely radiations. Neither the decaying law.
NASA knows, for sure.
The items take time to do their thing on this as well. Your still missing the point.
The rubber thing is just a visual way of visualising it all as are the various graphs. The graphs just like the rubber are the only things that are warped. The equations just predict certain things many of which can be checked.
An interesting paper. Mixing newton and relativity is it seems ok
https://www.researchgate.net/publication/350996439_Black_Hole-Made_Easy
An introduction, 🙁 made available 2009, produced in the 70'
https://www.researchgate.net/publication/30772372_Introducing_the_black_hole
There was a bit of sci-fi were that was done with (?) predictable results 🙂 Pass who wrote it but I did read it.
The comments about a true singularity in the first link would have implications.
A quick google throws up: https://en.wikipedia.org/wiki/Earth_(Brin_novel)
The plot of the book involves an artificially created black hole which has been lost in the Earth's interior and the attempts to recover it before it destroys the planet.
;-)
If we bend a "physical" rubber, we do NOT bend the "conceptual" coordinate system applied on it!
You have to distinguish between the entries (of physical events), which you obviously call various graphs, and the scaling, the coordinate system. This is outside of physics. A "bent coordinate system" only complicates the entries of events, but has NO influence on the entries.
Welcome to the world of science;-)
Concerning predictions of the equations, one example only, again:
Better stop feeding it, you should realize by now his posts are only fishing for attention.
[;-)] Forgive me for saying this, @cumbb, but you seem to be a "One Trick Pony"! [/;-)]
It all comes down to your "Thunderbolts" or "Electric Universe" approach.
I have tirelessly followed your ramblings that all is "Electric Plasma".
I have already debunked mediocre Edward Dowdye, Jr.
Donald E. Scott is another vexation.
What about Andrew Hall?
This man is clinically insane:
https://www.thunderbolts.info/wp/2023/02/25/shine-on-you-crazy-diamond/
He believes that the shapes of pebbles at the bottom of his stream in Arizona are more significant than results from the Large Hadron Collider. He believes in Telepathy, He believes Mountains are Tetrahedrons.
Now stop it. Start doing serious Mathematics and Physics! And stop Trolling. People with like you for it. You will feel a better person in yourself.
It all comes down to your "Thunderbolts" or "Electric Universe" approach.
I have tirelessly followed your ramblings that all is "Electric Plasma".
I have already debunked mediocre Edward Dowdye, Jr.
Donald E. Scott is another vexation.
What about Andrew Hall?
This man is clinically insane:
https://www.thunderbolts.info/wp/2023/02/25/shine-on-you-crazy-diamond/
He believes that the shapes of pebbles at the bottom of his stream in Arizona are more significant than results from the Large Hadron Collider. He believes in Telepathy, He believes Mountains are Tetrahedrons.
Now stop it. Start doing serious Mathematics and Physics! And stop Trolling. People with like you for it. You will feel a better person in yourself.
Nothing gasted my flabber any stronger than his thick skinned posts.
You are right;-)-:
;-)
Sorry;-)
But the ignore function even removes twice a day, just like a clock shows the correct time twice a day - identical space-time bending equations;-)
BAWBAG - Traduction en français
bawbag {substantif} ... trou du cul {m} [vulg.] bawbag (aussi : ****hole, ***hole, bastard, bugger, butthole) ...
That is clear enough.
bawbag {substantif} ... trou du cul {m} [vulg.] bawbag (aussi : ****hole, ***hole, bastard, bugger, butthole) ...
That is clear enough.
But a bit strong, even for a hairy-ersed Scotsman! Certainly not as we Scots use the word, with the exception of the butthole variants.
I also use bawheid, bam, bampot, dafty, dobber, dunderheid, eejit, nugget, skyrocket and tube - all having different nuances.
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I suppose it depend on how "micro" a black hole you want. I recall this was a fear with the LHC, and the fear of course was that once such a black hole was made it would start sucking in matter until it eventually sucked in all of Earth.The good news is that such a small black hole evaporates almost immediately, in microseconds or nanoseconds due to Hawking Radiation. There's a formula for the lifetime of a black hole vs. its mass (ISTR Jerry Pournelle wrote about this, perhaps in the same essay he wrote about first hearing of Hawking Radiation), and one made in any feasible particle accelerator would evaporate pretty much instantly, before it could attract other particles. Much larger masses, like a mountain's worth, might take milliseconds, and of course that mass would be converted into energy over that time, so you wouldn't want to be anywhere near it during those milliseconds.
As for black holes in SF, Larry Niven (excellent hard SF writer, I read about everything up through Integral Trees) wrote about them in the short story The Hole Man (and perhaps elsewhere), in which a captive (don't ask me how) black hole on the surface of Mars was released, and from then it was only a matter of time before all of Mars was eaten up. Wikipedia sums up the story, but it also spoils it if you'd rather read the actual story.
I forget if it was the novel Dragon's Egg or its sequel Starquake (both by Robert L. Forward, a physicist who wrote only a few SF novels, IMHO way too few) where the Cheela (a degenerate-matter intelligent species living on a neutron star that happened to be drifting by the Solar System) told the Human observers (after much science-learning and technological evolution by the Cheela) that they had entered the Sun and removed three or four small black holes that would have eventually caused big trouble.