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.

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 9, 2025 · In a video, a physicist reveals what the fourth dimension looks like—and where it may be.

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).

6 days ago · Tantalisingly, scientists now claim to have built a fourth dimension of space and in this video, we peer inside to explore this new reality and explain just what a 4D world might look like.

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 · What Exactly Is the Fourth Dimension? The fourth dimension sits in that intriguing space between “intuitive enough to imagine” and “just out of reach.” You can’t point to it the way you point …

Jul 21, 2025 · The concept of the “Fourth Dimension” has captivated thinkers, artists, and dreamers for generations. It’s a term that dances between the realms of theoretical physics, abstract mathematics, …

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 …