What is the concept of a time machine? How does it work?

To locate an object in a plane, we require four dimensions — length, breadth, height and time. We all travel frequently in the first three dimensions, but can’t do it in the fourth dimension `time’. Time machine is a device or vehicle that can potentially take us into the future or past and let us stay in that era, just as in fantasy movies. All dimensions have a fixed frame of reference, but we can’t define time. Most scientists believe the ‘Big Bang Theory’ as the origin of time.

Concept of Time Machine, Four Dimensions, Fourth Dimension Time, Fantasy Movies, Big Bang Theory, Origin of Time