Question

what is string theory

Answer 1

This is actually a very complicated question, but I'll try to give a brief explanation:

There are two broad branches of physics (quantum mechanics and general relativity) which are both useful, but incompatible with each other based on how they interpret/describe the four major forces. String theory is an attempt to unify the two branches, by describing particles as strings that vibrate at different frequencies.

I'll drop some references for further reading

https://astronomy.com/magazine/ask-astro/2014/06/gravity-and-quantum

https://einstein.stanford.edu/content/relativity/a11758.html#:~:text=In%20quantum%20mechanics%2C%20fields%20are,are%20defined%20by%20'quanta'.&text=Quantum%20mechanics%20is%20incompatible%20with,exchange%20of%20well%2Ddefined%20quanta.

https://www.symmetrymagazine.org/article/may-2007/explain-it-in-60-seconds-string-theory#:~:text=String%20theory%20proposes%20that%20the,rather%20than%20point%2Dlike%20particles.&text=String%20theory%20also%20requires%20six,extra%20dimensions%20to%20small%20ones.

Answer 2

thank you i will use this info