This week on the Weekly Experiment, Martin Fisher from Science Central finishes the second of a two-part series about tuning forks. When were they invented, why are they important to musicians, and how do they produce a sound?
Maybe you heard some “ribbits” in the evenings for the past few weeks – it’s frog calling season, a time for the amphibians to find their mates.
Frog calls are also used to track their population, which is an important indicator of environmental health. But due to disease, pollution, and loss of habitat, Indiana, and the rest of the world, has seen a declining frog population over the past few decades.
In Northern Indiana however, efforts have been made to restore some wetland habitat to its natural state.