/* * @Author: Xu.Wang * @Date: 2020-04-03 02:13:40 * @Last Modified by: Xu.Wang * @Last Modified time: 2020-04-03 02:13:40 */ // Gravity export const PHY_GRAVITY = -9.8 // Density of Water export const PHY_WATER_DENSITY = 1000.0 // Speed of sound in water at 20 degrees celcius. export const PHY_SPEED_OF_SOUND_IN_WATER = 1482.0