3542296
Beschreibung
Mindmap von paolatoro44, aktualisiert more than 1 year ago
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Erstellt von paolatoro44
vor etwa 9 Jahre
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the evolution of electric power
- in the early 1800s, the first time
electricity was avariable for cities
like new york
- electricity presented some denger because it could not be seen as it
travelled thourgh the wires , so it was inportant to warn people about
the hazards of this amaang new invention
- later the menters also had a revoluing disc that
measured the energi consumption in kilowatts hour
or kilowatts consumed in an hour
- another type of lamps the
flourescent linghts, were generated
by stimulanteing a sudstance with
invisible ultraviolet light
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