The 4D equivalent of a cube is known as a tesseract, seen rotating here in four-dimensional space, yet projected into two dimensions for display.

The 4th dimension of space is an extension of the 3rd dimension. For example, we can expand a simple square from the 1st dimension to the 2nd, and on to the 4th dimension (above).

In Einstein's theory of relativity, the 4th dimension is time, combined with the three spatial dimensions to form a four-dimensional manifold known as space-time.

Apr 1, 2025 · Albert Einstein introduced the idea that time is the fourth dimension, forming a four-dimensional concept called spacetime. This means that space and time are linked, and movement …

Sep 20, 2023 · In mathematics, particularly in geometry, comprehending higher-dimensional spaces, including the fourth dimension, is fundamental. These spaces expand problem-solving capabilities, …

May 21, 2024 · What is the Fourth Dimension? The fourth dimension is generally understood to refer to a hypothetical fourth spatial dimension, added on to the standard three dimensions. It should not be …

In 1880 Charles Howard Hinton popularized it in an essay, "What is the Fourth Dimension?", in which he explained the concept of a "four-dimensional cube" with a step-by-step generalization of the …

Dec 1, 2025 · Discover the concept of the fourth dimension, how it extends beyond space and time, and its impact on physics, math, and our perception of reality.

Dec 25, 2025 · Ever tried explaining the 4th dimension and watched someone’s brain short-circuit? This video makes it click—without the sci‑fi confusion. We start with a simple analogy: a 2D creature ...

Aug 29, 2025 · In this framework, every event in the universe is defined by its location in space (three coordinates) and the precise moment it occurs (a fourth coordinate for time). This spacetime concept …