4th Dimension Explained By A High-School Student
Why Physics Stack Exchange recommends it
Physics Stack Exchange askers cite it as the source of claims about 2D vision and a fourth spatial dimension that they then ask the community to check or correct.
Recommended by 1 people across 1 different months, 2012 to 2016.
What it is
A 2010 amateur explainer in which a high-school student, inspired by the novel Flatland, talks through how a fourth spatial dimension might work and how beings in different dimensions would perceive the world. It uses analogies like a sphere seen as a flat circle to argue that human vision is effectively two-dimensional.
What people said
Recommends autodidactic · 2013-08 · Physics Stack Exchange · on “As 3-dimensional beings, do we really have 3-dimensional vision?”
I was watching this video on YouTube [this video] of a high school student explaining perception in different dimensions, basically stuff he learned from reading the book Flatand. At one point in the video, he says that as 3-dimensional beings, we can't really see our 3-dimensional world in the 3-dimensional way it actually is, because we have 2-dimensional sight. To illustrate this, he used a sphere, and explained how we can only know certain physical things about it by the way light reflects off of it. It seemed convincing, but thinking about it again right now I'm not sure that I'm really convinced. He said in order to perceive our 3-dimensional world in the 3-dimensional way it actually is, w
Cites stp30 · 2012-05 · Physics Stack Exchange · on “Regarding possibility of infinitely many spatial dimensions”
Recently I was taking a look at a video [this video] explaining the existence of fourth spatial dimension and thereupon that infinitely many spatial dimensions are possible. Also it showed that what Einstein told about time being a dimension itself was also incorrect as time is always present, even in one dimension. So how's it all possible, is the statement by Einstein not correct?
Cites Frank · 2016-11 · Physics Stack Exchange · on “Fourth Dimension- I don't understand this”
According to this video [this video] at $1.20$, we, humans, perceive objects in $2$ dimensional. He also gave an example with a sphere: "Take a perfect sphere for example... If you're looking at a sphere, it looks just like a regular, two dimensional circle! The only way that you can tell it's an actual sphere instead of a circle is because of the hues of light that it receives..." But my question is: Question: What about looking at all the other objects from a different angle? For a sphere, it is really obvious because a sphere is perfectly round on all sides. So no matter where we look and which angle we look at it, it still looks like a circle! But how about other objects, such as a cube? If w