Pitch does vary with temperature, the higher the temperature, the higher the velocity, and therefore the higher the frequency for the same wavelength. But with string instruments, this difference is very small. The notes are those that you would find on a piano. That is why this table revolves around it. To add intervals, you must multiply the frequency ratios.
Absolute pitch is where a pitch can be referenced to another note that is absolute.
Relative pitch is only a comparison of two pitches to each other. History Galileo was involved in music primarily because of his father, Vincenzo Galileo, a lutist who conducted experiments with music. Galileo was also a lutist and composed music for it. Galileo's interest in musical experiments started at a young age. Although Galileo is known for his other experiments, he also conducted experiments with music.