Like the three-dimensional Great Universe, on a small scale, this two-dimensional world was almost flat, but on a broad scale, this two-dimensional world was also curved. It was like a huge carpet, with certain undulations and folds.
Of course, this phenomenon could not be seen from a two-dimensional perspective, because the direction of its rise and fall was the third dimension. But that way of putting it was also somewhat inaccurate, because this two-dimensional world had no three-dimensional macroscopic existence, so it should be said that it was curved on the Cosmic Membrane.
This was a scene The Great Voyage Organization had never encountered before. After all, the two-dimensional worlds they had encountered in the past had all been very small, nowhere near the vast scale at which spacetime curvature would appear.
And because they were in a two-dimensional world, The Great Voyage Organization's current method of observation was not ordinary optical observation, but Cosmic Membrane detection.
A Cosmic Civilization had that ability.
As for optics, light also existed in a two-dimensional world, but here it did not display wave-particle duality. It only had wave properties.
Light waves likewise had amplitudes of different sizes. Different amplitude frequencies contained different amounts of energy and represented different kinds of light, while the movement of light waves formed rays of light.
This phenomenon of light in the two-dimensional world was only its surface appearance, because it actually did possess duality, but its particle properties had already been hidden, hidden within the Micro World.
This was easy to understand.
The Micro World in a three-dimensional world had six Microscopic Dimensions, so the Microscopic Dimension of a two-dimensional world had one more, making seven Microscopic Dimensions. After all, the essence of dimensional reduction was to curl a Macroscopic Dimension into the microscopic level, which was