Linked Questions

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Does having a minimum length in space violate Lorentz invariance? [duplicate]

I’m trying to understand different approaches to quantum gravity. One involves quantising space and time themselves, which i believe can result in there being a minimum possible length and time ...
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186 views

Is the universe a lattice?

My understanding is that cause and effect create a partial order of events in the universe (and that relatively prevents anything stronger). My understanding is also that it’s generally useless to ...
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55 views

Can there be true instantaneous/stepped acceleration? [duplicate]

The time derivative of acceleration (m/s²) is jerk (m/s³). I know that when you push on an object, there cannot be true instantaneous acceleration, which leads to infinite jerk, because the object ...
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45 views

Is the “game of physics” which would use energytesimal (like Planck's quantities) rules to create all physics, time and space etc known? [closed]

Game of Life creates "life" using simple rules. Does something like "game of physics" exist and is it known?
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84 views

Can a photon be captured in a grid space representation at a fractional Planck position? [duplicate]

Consider a photon, positioned in space in a finite portion of a grid. Any point of the grid is vertically or horizontally aligned, each distanced by a Planck unit. $l_P = 1.616 199(97) × 10−35 m$ ...
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165 views

Planck time, time or time interval? [duplicate]

Planck time is really a weird topic, if we try to find out that is it time or time interval. It is the time taken by light to travel a Planck LENGTH so it must be time interval. But we also know that ...
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91 views

What were Feynman's objection(s) to a cubic lattice universe? [duplicate]

In this video of Feynman discussing the scientific method, starting at around eight minutes and 30 seconds, Feynman describes the proposition that space consists of a cubic lattice of points (as ...
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37 views

Can a region of space-time be viewed as a particle with properties of it's own? [duplicate]

Can a piece of space-time having 3 spacial dimensions and 1 dimension of time be viewed as a particle? Could this piece of space-time have properties of its own (mass, spin, charge) independent of ...
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23 views

Update: Does the Planck scale imply that spacetime is discrete? [duplicate]

This question has already been asked Does the Planck scale imply that spacetime is discrete? however I'm wondering if there has been any change in the community since it was asked roughly 8 years ...
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140 views

Implications of quantized spacetime on conservation of angular momentum

These two related questions cover the potential effects of quantized spacetime: Does the Planck scale imply that spacetime is discrete? Is spacetime discrete or continuous? This question extends ...
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40 views

Minimum amount of space [duplicate]

I always believed that there were no limits in the world and then I learned that a minimum temperature exists, and maybe a maximum speed. And now I am wondering about the boundaries of the world. Is ...
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48 views

If you have two Planck lengths extended from one point forming a right angle, whats the length of the hypotenuse? [duplicate]

Can we do measurements at this scale seeing that the length of the hypotenuse would have a value at a length that cant exist (1.4 Planck lengths)? Or is my interpretation of the Planck length ...
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177 views

Argument for the Smallest Division of Time? [duplicate]

Okay so a couple of months ago I was watch Vi Hart's video on how .999999... is equal to 1. Some really interesting arguments that I had never heard before. Yesterday, I came across an article on ...
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698 views

What about continuity of Space and possible discreteness of Time? [duplicate]

Is time continuous or discrete? Is even this question a valid question? If you say, it all depends on resolution then assume the best possible resolution achievable. If it is discrete, then what about ...
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68 views

Has Time in the Universe been found to be Discrete or Continuous? [duplicate]

I have a question, has the Universe been found to come in Discrete Quantum, like Quantum Physics or is it Continuous in Nature? I was wondering if time was like a Continuum, like the fluid in a soft ...

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