SNHS Science Blog 3: Dimensions

Clara Jeon

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We have all gone to the movies and saw a movie in “4D.” But is 4D really watching something with your seats moving? Not at all! 4D nor 4-dimensional is something completely different. To understand 4D, we first need to look into one, two and three dimensions.

A creature that can lives in a one-dimensional world lives in a line. They can go forwards and backwards, but nothing else.

Now, in the second-dimension is your typical coordinate plane. Something interesting to note here is that a plane is made of an infinite amount of lines, which is one-dimensional. The second dimension is made of infinitely many one dimensions. A creature in the second dimension will be able to go forward, backward, left, and right.

The next dimension is where us, humans are in. In the third dimension, we have another axis to the coordinate plane, the z-axis. The third dimension is made up of an infinite amount of planes. As a person in the third dimension, we can move forward, backward, left, right, up, and down.

Now, logic tells us that the fourth dimension should be made of multiple three dimension. How would that look like? Well, we as three dimension humans can not fully imagine this fourth dimension, but we are able to draw a theoretical fourth dimensions. One drawing is the tesseract. The tesseract is a figure that has several cubes connected to each other. Some say that someone in the fourth dimension will be able to see through three dimensional people. Maybe they would be able to see through our bodies… but we will never know.