Total internal reflection: When light reaches the end of a optically denser medium and is reflected back at the angle which it came due to the incident angle being greater than the critical angle. Reflection: Meditating about things. Well,sort of. **Kites establish a way for the observer/flyer and the sky to interact with one another. No kite strings are mentioned just to point out the importance of a mediator so both can interact. Kites would simply sail about torpidly without "any strings attached."