Here's a breakdown:
* Discovery: The ionosphere was discovered, not invented. Scientists realized its existence through observations of radio waves.
* Early Research: Key figures in the early research and understanding of the ionosphere include:
* Arthur Edwin Kennelly (1902): Proposed the existence of an electrically charged layer based on radio wave propagation.
* Oliver Heaviside (1902): Independently proposed the existence of this layer, also based on radio wave observations.
* Edward Appleton (1924): Proved the existence of the ionosphere through experiments, earning him a Nobel Prize in 1947.
So, while the ionosphere wasn't invented, these researchers played significant roles in its discovery and understanding.
