Convert Speed of Sound in Pure Water (vₕ₂ₒ) to Mach (20°C, 1 atm) (Ma (20°C)) instantly.
About these units
Speed of Sound in Pure Water (vₕ₂ₒ)
The speed of sound in pure water is approximately 1,480 m/s at room temperature, though it varies with temperature and pressure. Sound travels faster in water than in air because water molecules are more tightly packed, allowing vibrations to propagate more efficiently. This speed is critical for sonar systems, underwater communication, acoustic research, and marine biology. Whales, dolphins, and submarines all rely on sound propagation through water, where visibility is extremely limited. Understanding vₕ₂ₒ allows accurate modeling of ocean acoustics, ranging from climate studies to naval operations.
Mach (20°C, 1 atm) (Ma (20°C))
At 20°C and 1 atmosphere, the speed of sound in air is about 343 m/s, making Mach 1 = 343 m/s under those conditions. Mach numbers classify aerodynamic regimes: Mach 0.3–0.8 (Subsonic), Mach 0.8–1.2 (Transonic), Mach 1–5 (Supersonic), Mach 5+ (Hypersonic). Temperature influences Mach speed significantly; colder air slows sound, while warmer air increases its speed. Aircraft design, jet engines, wind tunnels, aerospace testing, and atmospheric re-entry physics all rely heavily on Mach numbers referenced to standard conditions.