What are strings?
Q: What are strings?
A: Strings are hypothetical objects that are believed to be the elementary particles of the universe. If they exist, they would not be point-like particles, but rather 1-dimensional "strings" of energy that vibrate in various dimensions.
Q: How many dimensions does our universe have?
A: Physicists accept the fact that there are at least 11 dimensions in our universe: 1 time dimension and 10 spatial dimensions.
Q: What is Planck length?
A: Planck length is a unit of measurement used to determine the length of strings. It is calculated by taking the square root of hbar times G divided by c cubed (e_p=sqrt(hbar*G/c^3)).
Q: Is it known whether these strings actually exist?
A: It is still not known whether these strings actually exist. They are pretty much the main topic of string theory.
Q: What type of particle would strings be if they existed?
A: Strings would not be point-like particles, but rather 1-dimensional "strings" of energy that vibrate in various dimensions.
Q: How do physicists measure string lengths?
A: The length of the strings would be determined by Planck length, which is calculated by taking the square root of hbar times G divided by c cubed (e_p=sqrt(hbar*G/c^3)).
Q: What is string theory about?
A:String theory is about determining whether or not these strings actually exist - they are pretty much the main topic of string theory.
