Grid Alternatives receives equipment donations from solar panel and inverter manufacturers such as SunPower and Enphase. They have a portable loud-speaker system, and there is an inverter, as you call it, at the transmitter. We can use automobile batteries, and the inverter will give us 110 AC for a while, until the batteries run down.
The ancient Greeks have made many influential contributions to western civilization. These contributions, which are also the achievements of ancient Greece, include certain things in the areas of philosophy, art and architecture, and math and science.
Greece is widely considered to be the cradle of Western culture and democracy. Modern democracies owe a debt to Greek beliefs in government by the people, trial by jury, and equality under the law. The ancient Greeks pioneered in many fields that rely on systematic thought, including biology, geometry, history, philosophy, and physics.