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Piece of Bread falling over

Khufu says...

The thing that blows my mind here is that it's not actually being 'pulled' down, the well in space-time from the mass of the earth is distorting things in a way that, because the time is bending, even though it's sitting still on the counter, it's like the counter is accelerating upward pulling the bread down into the counter much like your head gets pulled back when gunning a stroked small block. Just WOW...

BSR said:

Gravity. It calls us all back to the earth. R.I.P. piece of bread.

Gravity is NOT a Force

BSR says...

Wow! That's a lot to digest. I kinda get it only because the math is not my specialty. I'll have to watch it a few more times for the illustrations to sink in. The curved space time thing is new for my brain to think about.

It's just nice to know I'm not magnetically attractive even though I have iron in my blood. Too bad I'm probably still attractive to wild animals because I do have blood.

What Was Happening Before the Big Bang?

MonkeySpank says...

You should check out PBS Space Time on YouTube then

I love Brian; he is a pillar of the physics community. However, in the interest of time, he only got into Hawkin's shuttlecock interpretation.

There are others such Paul Steinhardt Eternal Inflation, and the universe being born out of black/white hole as described in the Penrose diagrams.

General relativity math is solid, but no one really knows how to interpret the singularity (if there is such a thing).

lucky760 said:

Totally agree.

This is extremely fascinating.

*quality

Why SpaceX Built A Stainless Steel Starship

Mordhaus jokingly says...

Thanks to the stainless steel construction, flux dispersal is generated at an optimum level from the Flux Capacitor, providing the entire vehicle and its passengers a smooth passage through the space-time continuum during temporal displacement.

Donald Trump: Magician-In-Chief

ChaosEngine says...

*quality *doublepromote

This is what we've fucking sunk to.

Remember John Olivers "look way up, you'll see rock bottom" bit?

We have now fallen so far that we have looped around the universe in some bizarre space-time weirdness and are now plummetting toward rock bottom again from the other end of the universe, calmly waiting for the sweet relief of oblivion as we smash face first into catastrophe.

The limits of how far humanity can ever travel - Kurzgesagt

SDGundamX says...

If I'm doing the math correctly, the universe is expanding at around 46 miles per second, which is around 165,000 mph. Is there some reason why humans could not overcome this speed limit? It doesn't seem that exceptionally fast (no where near as fast as the speed of light), and if you accelerate slowly to it, like over several days or weeks, the g-forces involved wouldn't be that extreme, would they? The video didn't really explain why we could never go fast enough to overcome the expansion rate.

Also, I thought most theortical physicists like Stephen Hawking believe that in the future technology could advance enough to allow us bend space-time and hence travel "faster than the speed of light" without actually travelling faster than the speed of light, basically like folding a piece of paper and sticking a pin through both sides. When you lay the paper down flat, the two holes will seem quite far away from each other, but when you fold the paper, the holes are right next to each other. Our current understanding of physics doesn't rule out the possibility (at least from a mathematical perspective) although generating the energy necessary to perform such a feat would of course be problematic.

Spike Lee's "Wake Up" | Bernie Sanders

Drachen_Jager says...

Ahem, sifty, I don't mean to correct you, but don't you mean, "Invocations (fear, lies) cannot be called by bobknight33 because the sheer hypocrisy of bobknight33 accusing others of these is so overwhelming it might cause a rift in the space-time continuum - sorry."

Would Headlights Work at Light Speed?

ChaosEngine says...

Definitions are flexible. The universe is currently defined as the totality of existence, in much the same way as the "world" was defined centuries ago.

In theory there could be many parallel universes (where we change the definition to mean " a space time volume with a given set of fundamental physical constants")

There's also the theory that our entire universe is a 2d hologram.

Personally, I don't know why you'd want to limit yourself to anything as prosaic as one existence. The idea that there are infinite universes is fascinating....

robdot said:

the universe, by definition,,contains all there is.

the Elizabeth warren speech that has everyone talking

speechless says...

If Bernie Sanders ran with Elizabeth Warren as VP, and they somehow collided with McCain / Palin, I'm pretty sure it would rip a hole in the space time continuum.


edit...also, yeah, credit unions are great. Most people probably have access to one and don't even know about it.

Mac 3.5" Disk Eject in Space

GOVERNMENT, STOP PUTTING RAINBOW'S IN OUR WATER SUPPLY!!!1!!

artician says...

I know I've seen this video on here already, and the description was nearly identical if I recall, but the time stamp says this was only added 3 hours ago. Did I fall into a rift of space-time again?

kulpims (Member Profile)

Best Explanation of Magnets I've Ever Seen

Stormsinger says...

Nah...if it doesn't affect the results or the predictions, it doesn't really matter. Not to say that some of us won't be curious anyway, but that's the only real point. Gremlins or a convenient concept of warped space-time, if they cause identical effects, not only does it not matter, but nobody will ever be able to show which is correct.

"How" in this sense is identical to "Why", a neverending chain of questions that can never be completely answered. "What will happen" is where the meat is.

Payback said:

Magic farting gremlins suck everything downwards at an acceleration of 9.8 m/s2.

Sometimes how is just as important as the observable phenomena.

Big Budget Hollywood Movie About Noah's Ark with Russel Crow

Chairman_woo says...

You sir clearly do not fully understand the nature of entropy (and nor does about 95% of the human race so you can be forgiven there).

You have however stumbled into making a genuinely worthwhile point here (though I must state I think for completely the wrong reasons).

The idea that the universe inevitably moves towards a complete "heat death" is I think incorrect, it fails to account for the effect of ever increasing complexity within the closed systems the universe produces (i.e. evolution which applies as much cosmically as it does to organic life on earth).

If the universe remained with no more complexity than it currently has then yes everything would eventually "burn out" and spread the energy of the universe so thinly that everything would cease to work (if only on a space-time level).

But the nature of the universe does not remain static, it creates ever more complex and actuated systems dialectically. Energies>Particles>Compounds>Nebulae>Stars>Planets>Organisms>Unconsciousness>Consciousness>???>God! (not intended to be an exhaustive list it's purely for illustration)

Evolution does trump entropy IMHO but this is largely because the actual laws of entropy are crazy complicated to understand and most people (including to some extent myself) don;t fully understand the subtleties of how it really works.

If nothing else; to say that the whole universe eventually enters a state of complete entropy assumes that every complex closed system that does or ever will exist will eventually break down. This is far from a forgone conclusion, we alone as evolving conscious creatures are capable of developing means to circumvent or even prevent this. Let alone what other wonders we have yet to observe or the universe has yet to manifest!

In conclusion: The Universe evolves until it reaches God (or dies trying ). God does not then create the universe but rather commits suicide (what else is God to do? Eternity is a very long time for someone that already knows and has done everything...). Process repeats ad infinitum.


Makes a lot more sense that way around don't you think? (and no ancient books of dubious origin need ever be consulted to derive it either)

Saying God created the universe only leaves you with more questions which by their very nature cannot be answered. We would have to be God itself to ever answer them, so we are left with a judgement call. No logical certainty, only faith.

This way around we can by pure rationalism and empiricism arrive at an explanation of how the universe might evolve God via ever increasing complexity of consciousness and actualisation (true post-humans alone would be like demi-gods, it's not a huge leap to keep taking this idea further)

Further to that Ontological mathematics (that is to say "really real mathematics") can assess a framework to understand how the universe itself came to be (we can arguably go pre-big bang with this but that's always going to be a controversial idea here).

^ Now I might be wrong about some or even all of that but it is at least a reductive argument. Using God as an explanation for anything without first explaining God is always going to be a circular argument. If your going to use circular logic you can prove basically anything you feel like!

"God is dead!"

martineister said:

How people can claim evolution and believe in entropy at the same time is mental deceit.

Official Trailer from Comic-Con | COSMOS A Spacetime Odyssey



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