I recently asked myself that same question and I think that they are from the tools that they use to pull the string tight and it wont affect the string at all.
the strings in a tennis racquet are simply called "strings".
Strings
Babolar revenge polyester strings.
Two strings are needed to string a tennis racket. The length of the string is to be about 11 to 12 meters.
It is used to make racket plat
The head of a tennis racket is the entire section of the strings, and the part of the frame that surrounds the strings.
Hitting with flat tennis balls doesn't necessarily hurt your strings all that much, but it definitely hurts your game. They can hurt your strings a little if you are using all of your might to swing into the tennis ball, and because it is flat the ball will flatten out over the strings and cause more areas of the string to become weaker.
When you hit a tennis ball with a tennis racquet, you want the ball to contact the sweet spot of strings.
It's a shock absorber.
yes it does
there is a link. it tells u all the different strings. it also explains the string tension
Tennis racket strings today are made out of synthetic materials, such as:NylonPolyesterKelvarVectranZyexPolyolefinMetal Wire