Is There Really A Fourth Dimension? Yes And No

It's time to spend another lethargic Tuesday morning wrapping your head around Minute Physics' latest crash course in science. This time around they explain why trying to name or number the multiple dimensions in our universe is a pointless endeavour.

For example, in the emptiness of space there is no reference point to delineate which is the up dimension, and if you can't tell it apart from the others, who's to say it should be referred to as the first or second? And some dimensions might actually be indistinguishable from another, even though they behave differently. So how are we supposed to label and tell them apart? We know what you're thinking — it's time for another cup of coffee. [YouTube]

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