Lectura para la realización de ejercicios, Ejercicios de Idioma Inglés

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eN History of Electricity Reading Comprehension Sheets In modern lie, ve use electriciry on a daily basis and do not think anything of iz. We take it for granted. However, for most of human history clectricity wras not lnown about so how and wky did that change? Read on! While we did not know that electric currents existed, we were aware of shocks from a fish. We called it “Thunderer of the Nile”. Ancient Egyptians thought that electric fisa were “protectors' of other fish, Electric fish were written about by the Ancient Greeks, Romans and Arab Scholars. We Ancient Greeks knew that rubbing amber would make light objects attract to it. We thought it became magnetic. What they were actually observing was static electricity! It was not until hundreds of years later in the 16005 that William Gilbert studied and distinguished between magnetism of metals and static electricity. He used the Greek word for amber “elertror and invented a new Latin word - electricus. Benjamin Franklin was the first person to study electricity in depth. One of his most important findings was proving that lightning was electrical (it had been thought of os different up until then). He flew a kite during a storm, to whicn he had attached a key. When the kite was indeed hit by lightning, he felt electric sparks from the Rey. He was very fortunate not to be electrocuted! This is not an experiment that needs to be repeated!! He was also the first to store electricity and knew it consisted of positive and negative charges. Alessandro Volta invented the first battery — which was known as the “voltaic pile' as it was made of layers of zinc and copper which was either combined with sulphuric acid or saltwater brine to create an electric current. Volta's name was also the basis for the following words: Voltage: This is the electric force that causes free electrons to move jrom one atom to another. Volt: ls the unit of measurement for Voltage (written as V), A o. + AE Y iwinkl.comk