The spectroscope (above, an illustration of an 1872 model) is just one of many Bunsen inventions. He also designed the water jet pump, which can accelerate filtration by creating vacuums, as well as ice and vapor calorimeters, which measure heat absorption and loss.
"He had many small inventions for everyday laboratory work, which are still in use today," Nawa explained, adding that "it's often difficult to trace historical experimental setups, because so much of this equipment is sort of recombined over and over again with frequent use."
Bunsen also left a human legacy as a very important teacher, Nawa stressed. Over more than 30 years, more than 3,500 pupils passed through his laboratory and trained in his methods. The impact of his students' subsequent work, she said, is incalculable.