Live Stoner Chat Special Relativity

[gradolabs]

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I watched the 2nd dim vid and the 5th dim vid... The first was boring because I'm capable of understanding what a line is. The fifth one was alright, but he spent the whole time talking about quantum entanglement. That's cool and all, but it's already a concept I'm aware of. Being a 4 year old video, it's expected to have some classic information in there, so all's well. I then decided not to continue watching the vids in favor of brushing up superstring theory.

 

[gradolabs]

I tend to imagine every dimension beyond the zeroth as a degree of freedom.

In zero dimensions, you're scarcely allowed to exist. You can have one value. But that value is discrete and there can only be one of you. You can't ever come into contact with another value because to touch would suddenly manifest another dimension - depth or width or height depending on your perspective. You can get as close as you want, but you'll always be alone.

With the addition of another dimension you're afforded another degree of freedom. All the points can finally see each other and become something entirely different - a line. And the points are happy.

But now the points want something else. One point could only ever spend time with two other points. So again, we add more freedom. With another dimension each point can now touch any other point at it's side. The points can form lines, the lines can form boxes and the boxes could all hang out together.

And still the points wanted more options. So with a third dimension, points in space and lines could all stack on top of each other and create physical objects with solid geometry capable of interacting with each other in increasingly complex ways.

But to move at all - to exist as something once and then change - that requires another degree of freedom. That would be time. The ability to become something has now been granted to all the points.

But points wanted more. They wanted to live. Hence the remaining dimensions. Something in them must allow for consciousness. Because all across the planet, every day there's plants growing, people living and birds shitting on my car. Organisms, comprised of points and lines and boxes (electrons, protons and neutrons, neutrinos, tau electrons... blah blah [there's like 20 something elementary particles]) are making decisions and interacting with planets and stars and moons.

We take the energy from a star and convert it to electricity to get around. We plant crops that take energy from the sun and nutrients from the soil to make better nutrients for us. Cause dirt tastes nasty and bacon is amazing. To me that's how we're currently utilizing the extra dimensions. My points wanted bacon, and I'm willing and able to make that happen.

Geddit?

I still want to know the 'do not exceed' for a living human in terms of space travel.

 

[Torched]

Just got here

Twin pardox... they're testing it: http://www.space.com/22345-nasa-astronaut-twins-spaceflight-experiments.html

Multiverse theory is a conceptual physics game in my mind. It can not be true for the same reason speed of light travel can not happen to anything with mass. Not enough energy.
The Meta-universe would have to constantly have an infinite amount of energy to support new universes for every single action of anything anywhere, according to hiesenburg even just think about stuff can change the universe. Enough to spawn a new universe? I doubt it.

Ion drives could theoretically get us close to the speed of light. Basically you use a stream of ion to push your ship faster and faster. You start out slow but eventually you could get going fast. Until you're hit by any piece of space dust because at that speed it's going to hurt!

Considering human have problem biologically going over the speed of sound we are not really built for near light speed travel.

 

[az2000]

The Meta-universe would have to constantly have an infinite amount of energy to support new universes for every single action of anything anywhere,

This kind of reminds me of a discussion I had with a pharmacist two years ago. His reaction to parallel universes was "it doesn't sound feasible. There would be an exponentially large number of universes when we take into account every quantum event (choices) I and everyone in my world cause." My response was "what, you don't believe infinity is real?"

Your point about matter and energy is a good one. But, if universes (or membranes, as M-Theorists call them) exist within a multiverse, then we have no idea how resource- and energy-rich that outer container is. (Or, whether it is the outer container.).

Or, the kind of power that exists (perhaps to create matter/energy ex nihilo) at 10 dimensions. Or, even if 10 dimensions is the total number. If scientists have to explain the outer container of all universes (the multiverse), they may come up with 10 more. Which leads me to....

Similar to your skepticism, my cynical side causes me to speculate that science can't simply say "there's something bigger than us... and perhaps it's a caring thing which created our universe for reasons we'll never understand." They have to have scientific answers. M-Theory may be a way to push all the unanswerable questions out to another level. Construct a solution to all of science's questions about "where did the big bang come from" and ignore "where did the multiverse come from." They can say "aha... we have the answer to everything..." and ignore how they created an outer container for which they have no answers for.

But, it's mind-blowing to think about.

The first was boring because I'm capable of understanding what a line is.

Sorry. I was thinking of this which does the 1st through 10th dimensions in a single 2-part video. It's faster paced. May still be too basic for you. But, for others new to the topic it might get them thinking about things in a new way.

[video=youtube;zqeqW3g8N2Q]https://www.youtube.com/watch?v=zqeqW3g8N2Q[/video]

 

[gradolabs]

Sweet. Thanks for clarifying... I hadn't seen that vid yet, but I'll watch it...

Just wanna say something first. I think we might be able to use the gravitational pull from planets and stars to sling shot around them. We'd enter into the field just long enough to gain a little momentum, then we could conserve our energy for blasting back out into space. Float, sling shot, repeat. And you'd be able to (theoretically) keep accelerating as long as there were objects to sling shot around. This could be used in addition to more traditional means of propulsion... ion or combustible chemicals or whatever it turns out to be... (bananas?)

Most of what I know about strings and branes I learned from Ed Whitten, Stephen Hawking, and Brian Greene. And most of what they wrote or said about it was highly simplified, but I picked up on a lot of stuff.

In terms of understanding the fundamental elements of the universe all I need to satisfy my curiosity is to simply be aware of them. Strings, branes and d-branes. According to the latest human intelligence, everything in the universe is comprised of those. The fun part is learning how to interact with them directly, or how they behave, and form matter.

p.s. if we're stuck here on earth, at least for the foreseeable future, I wonder what the extent of our potential is here. We all have this explorer mentality bolstered by fiction and fantasy. Most of us are pretty bummed out we don't have flying cars yet. I dunno. Maybe I'm jaded. Since when is earth not enough? Anyway, just my 2 cents.

 

[gradolabs]

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I was reading that humans can withstand sustained periods of high g force... most experienced pilots can clock in 5-9 times the force of gravity during banking turns. After a prolonged period though, you'll start to lose vision and consciousness in that order. But earth's gravity accelerates objects at 9.8m/s/s, so 5-9 times that is 50-90m/s/s ish. So you'd have to calculate a path around an object that peaks at 5 g's just to be safe and you can gain about 110mph per second during a sling shot. That can add up quick if the circumference of the sling shot is wide enough.

So that takes care of the acceleration part of the problem. I'm still drawing a blank on the terminal velocity of biological organisms.

And if there's nothing in space to sling shot around and you appear to be free floating into oblivion, I'd say your best bet would be to create a micro black hole... particle accelerators here on earth are already capable of doing that in theory. So you could eject a device to rip a hole in space time and use it's gravity to redirect your vehicle.

When I die I hope I don't come back as a toad stool because there's a lot of stuff I want to experience that just isn't possible here and now. Although if I do come back as a toad stool, I hope I'm a psilocybin cubensis.

 

[Balarama]

Don't forget of cosmic rays in interplanetary and interstellar space.
Almost every ray that hist a dna strand, mutates it, so in my opinion biological organisms are not at all suited for deep space traveling, being evolved in and for very particular conditions, here on this little planet.

Automated nanobots would do the job much more efficently

 

[gradolabs]

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Line the cabin with lead. That's what the did in Sphere. In that book (I think it was that book) they found a spaceship on the bottom of the ocean under 30 feet of coral. And we know that coral grows really slow, so that only added to the mystery. So they start excavating it and on the hatch they find an american flag emblem. American space ship under centuries of coral? Hmmm...

 

[gradolabs]

Or maybe we could form a protective magnetosphere around the ship. And while on board the ship, you could use a compass to get around. All that requires is a powerful electromagnet with coils in the hull.

 

[Balarama]

Which in practical terms means a lot of mass to move or complex mag.field machine, both options just add to the pre-exsisting problems with human travel in space.
I thought a lot about the subject and it always came out nanobots are the way to go.
Imagine nanobots like you imagine DNA, only the bots are way more adaptable and could form any structure or bigger machine, like DNA forms cells and so on

Couple that with the capability of sharing information, add an unimmaginable(to us) computing power and there is a chance for it to take over the entire universe!
"Grey goo" is hypothetical concept similar to this scenario, only the Goo acts stupid, only makes more of itself, replicates, does not evolve into complexity. If it could...

http://en.wikipedia.org/wiki/Grey_goo


Imagine