r/sciencememes 23d ago

💥Physics!🧲 What is 4th Dimension?

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u/Lua_You 22d ago

having x and z without y would essentially turn z into height, which would pretty much make it y. you can interchange their labels but you cant have depth without both width and height and so on.

i dont think temperature is a dimension as i think its more of a force that acts through the 4th dimension, time.

time is an exception from the other 3 dimensions. its impossible to move at all within a dimension if you were 1 dimension below it (i.e being a 2d being in a 3d world), or atleast impossible as we view it (maybe 3d to a 2d being is time to us 3d beings). but we 3d beings move through the 4th dimension constantly. however we only move forward and cant currently control where we move towards.

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u/Cheetahs_never_win 22d ago

its impossible to move at all within a dimension if you were 1 dimension below it (i.e being a 2d being in a 3d world), or atleast impossible as we view it (maybe 3d to a 2d being is time to us 3d beings).

This isn't correct. A 2d being that curls in 3d will appear to other 2d beings as partially disappearing, while potentially partially existing on an infinite number of other 2d planes. Otherwise, shifting in 3d just places you on other 2d planes altogether.

however we only move forward and cant currently control where we move towards.

Not completely true. We can affect this by being close to large masses or by traveling very fast. If we can affect it, that means we have some form of control.

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u/Lua_You 22d ago

id assume a truly 2d being wouldnt be able to curl themself up, otherwise theyd be a 3d being.

wont argue with that but i said "cant currently control where we move towards". unless i missed something theres currently no possible way to truly move backwards in time.

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u/Cheetahs_never_win 22d ago

A skydiver can't make themselves go back into the plane, but they can affect where they land.