
However, there are no solid objects other than the entrance for the sound waves to bounce off of. Those talking in the chamber have an echo in their voices akin to when a character thinks a word, rather than says it aloud. Its reflective floor is of undefined area, and the Room's boundaries are thought to stretch to infinity in all directions even though it appears to have a definite atmosphere, limiting its size to about that of the Earth. There is no night or day in the Room, but the surroundings remain a constant bright iridescent white aurora. The Hyperbolic Time Chamber is a separate dimension from that of Earth. Gohan and Goku in the Hyperbolic Time Chamber

A step over the threshold of the training area brings one immediately into ten times Earth's gravity (the same as that of Planet Vegeta, Planet Zoon, and King Kai's Planet). When using the entryway to the Hyperbolic Time Chamber through The Lookout on Earth, one year inside the chamber is the equivalent to one day on the outside.

Each chamber has a time-compressed nature, making the flow of time vastly different compared to the flow of time outside of the chamber. "Room of Spirit and Time") is a mysterious dimension that exists outside of Universe 7, but can be accessed from the universe via different doorways.
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The Hyperbolic Time Chamber ( 精神と時の部屋, Seishin to Toki no Heya, lit.
