Is real life in 3D?

Is real life in 3D? We live in a 3D (D stands for dimensional) world with the 4th dimension as time. By using multiple dimensions in ultrasound, we can find the width, depth and height of an object (in this case, your baby!). Below is short summary of each dimensions and how ultrasound takes advantage of it.

We live in a 3D (D stands for dimensional) world with the 4th dimension as time. By using multiple dimensions in ultrasound, we can find the width, depth and height of an object (in this case, your baby!). Below is short summary of each dimensions and how ultrasound takes advantage of it.
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