By understanding atmospheric pressures, a soda-bottling company can scientifically determine the limits of carbonation for soda pop at various localities ﹘ too little, and the taste will be flat; too much might result in explosion when the bottles reach their destinations.
例如：雷達是發射無線電波，利用電波遇到雲層產生回波的時間，推算雲層的距離；依回波的強弱，推算雲層的厚度。