Strings are identified as having a mass and charge as well as wavelength and frequency.
Scaled to the universe from Earth, the strings are only as big as a tree.
Extra Dimensions of Space
- To allow for variety of properties particles and forces need to be vibrating in more than three dimensions.
Why Strings?
- Unification Theories
- Strings smooth out jittery structures and can work in both realms
- Strings can stretch into membranes (d-branes)
- with enough energy, a d-brane can be as large as a universe!
- The universe may be a d-brane floating in a higher dimension
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