Technological innovation: lighting

  • Héctor Daniel Molina Ruiz

Resumen

Innovation is the only way to create wealth over the medium term. One of the most important innovations of men’s history is the electrical light bulb that generates new social changes. Before electrical light bulbs, houses and streets were lighted candles elements, but they had some disadvantages. That radical innovation made possible to develop man activities.

Publicado
2013-01-05