Archive | 2019
Active Galaxies: Messages Through Radio Waves
Abstract
Through the ages, the human eye alone was the most important means of observation. In the early seventeenth century, the telescope was invented. Gradually, the size of the biggest telescopes became larger, and, complemented with photography, they helped us to see ever further into the universe. In the 1930s, this process was in full swing and hardly anyone could imagine that there would be any other means of extending our vision except by further development of ordinary optical telescopes. It was also not known that there are other important mechanisms of radiation from celestial bodies than hot gas and that there are many celestial bodies emitting other types of radiation than light.