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/sci/ - Science & Math

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10758594 No.10758594 [Reply] [Original]

Disclaimer: Am retard with only BBT-tier knowledge of science

So, if large masses are supposed to bend space - resulting in gravity - do they also "stretch" it? When the effect is visualized in CG animations, or with balls on stretched lycra, the space-stand in is clearly deformed, making it shaped like a cone, rather than a circle, and the surface of a cone is greater than area of a circle.
Does it mean that there is "more space" near large masses than away from them? If so, does this mean that the volume of superheavy objects in space has to be calculated in a different way, as it is greater than just a volume of a sphere? Are they "bigger on the inside"?

>> No.10758621

>>10758594
>Does it mean that there is "more space" near large masses than away from them?
Yes, black holes are bigger on the inside due to the counterspace aspects of the electric universe. The more you bend it, the more you cause "stretching" or dark energy. We're all falling into the galactic center, so it makes the universe look like it's expanding. But the center remains at a constant distance from us while we orbit it.

>> No.10758622

>>10758594
>do they also "stretch" it?
I think so, yes, in the direction opposite to the force (that is, outward from the object). This would redshift radiation coming from a massive object.

>> No.10758700

>>10758594
Yes! GR is all about how mass-energy affects geometry. More specifically, how it affects the spacetime metric, which is a generalization of a distance formula.

Generally speaking, you can start out choosing whatever coordinate system you like, as long as the coordinates vary smoothly and uniquely identify every spacetime point. However, without knowing how mass and energy are distributed throughout those coordinates, there is no way to translate coordinates into distances and time intervals. This is what's meant by the phrase "coordinates have no immediate metrical meaning."

Once you know the mass-energy distribution throughout your coordinates, you can calculate the metric, ie distance formula, for those coordinates. In the case of using cartesian coordinates in empty space, you end up with the Pythagorean theorem (more accurately, the Minkowski metric). In most real world scenarios, the metric will only deviate very very slightly from this, but around black holes and such, distances, areas, volumes, and time intervals will be different from what you naively calculate using the typical formulas based on coordinate radius, coordinate angle, and coordinate time.

>> No.10758970

>>10758621
>>10758622
>>10758700
Can it be that the measured wave lenghts of supernovas are deformed by the incorrectly calculated gravity near big objects (black holes, galaxies)? They think the universe is expanding but what if only the calculation of the gravity is incorrect?
https://www.youtube.com/watch?v=OTMELHUAzSM

>> No.10758996

>>10758621
OP this guy is a schizo or troll, don't listen to him

>> No.10759001

>>10758700
this, on the other hand, is a true interpretation

>> No.10759060

>>10758594
It does streach, we use this stretching and compression to measure gravitational waves. But keep in mind that we don't really know is the "fabric" of spacetime is an actual real entity of our universe, or if its just a useful metafor for how the forces behave. All we know is how matter is affected by "it".

>> No.10759490

>>10758594
>Does it mean that there is "more space" near large masses than away from them?
Space isn't bending into the third dimension. It's folded into minkowsky space in general relativity.
*Folds piece of paper and pushes pen through it*
Length contraction is a thing, but its relative to your frame of reference.

>> No.10760024

>>10759490
>Space isn't bending into the third dimension
What? I don't understand what this means. What would "bending into the third dimension" even entail, if we already have three spatial dimensions?

>> No.10760046

Time stretches as well.