For instance, in 1803 he believed that oxygen atoms were 5.5 times heavier than hydrogen atoms, because in water he measured 5.5 grams of oxygen for every 1 gram of hydrogen and believed the formula for water was HO.
例如，1803年，他认为氧原子的质量是氢原子的5.5倍，因为他对於水做测量发现每得到1g的氢会得到5.5g的氧，并坚信水的分子式是HO。