Strings (tennis)
The material used in tennis string can significantly affect a player's performance, and even health. Several materials are used to make tennis strings. They vary in terms of elasticity, durability, rebound efficiency, tension holding capability, and manufacturing cost, among other considerations.
Suroz
It has three or four main strings for playing which are tuned 1. low E - 2. low A - 3. a (440 Hz) - 4. e. Strings one, two and four are made of steel while string three is made of thick gut. there are five to eight sympathetic strings, made of thin steel and tuned according to the raag to be played. The playing strings are some millimeters higher on the bridge than the sympathetic strings, so that the latter cannot be touched by the bow. The strings are not played like on the sarangi by pressing them with the nails, but by touching them with the fingers, but without pressing them onto the neck.