🌍Dimensions refer to directions in space, not mystical or separate realms.
🧬Extra dimensions beyond three may exist and be smaller than atoms.
⏳Space-time is a four-dimensional concept that combines space and time.
📐Different trajectories through space-time are possible, similar to paths in space.
❓The existence and nature of extra dimensions is a topic of ongoing discussion in physics.
What are dimensions?
—Dimensions refer to directions in space, such as up-down, left-right, and forward-backward.
Are there more than three dimensions?
—Physicists speculate that extra dimensions smaller than atoms may exist.
What is space-time?
—Space-time is a four-dimensional concept that combines the three dimensions of space with time.
Can we travel through time?
—Time travel is theoretically possible, as we naturally move through time as we age.
What is the current understanding of extra dimensions?
—The existence and nature of extra dimensions are still subjects of ongoing research and debate in physics.
00:00In this video, theoretical physicist Sean Carroll explains the concept of dimensions beyond the traditional three.
02:32Dimensions refer to directions in space and are not mystical or separate realms.
04:23Physicists explore the possibility of extra dimensions that are smaller than atoms.
06:39Space-time is a four-dimensional concept that combines the three dimensions of space with time.
08:53Different trajectories through space-time are possible, similar to different paths in space.
10:36The existence and nature of extra dimensions are still subjects of ongoing research and debate in physics.
