Complex sentence: In 1871, British physicist John Tyndall wrote about his new invention, a "fireman's respirator" featuring a valve chamber and a filter tube with cotton saturated with glycerin, lime and charcoal, to filter smoke particles and neutralize carbonic acid.
Split into simpler sentences: In 1871, British physicist John Tyndall wrote about his new invention, a "fireman's respirator" featuring a valve chamber and filter tube. This device used cotton saturated with glycerin, lime and charcoal to filter smoke particles and neutralize carbonic acid.