They have become so commonplace that they are often taken for granted. Each year, around 2,500 million light bulbs of all sorts are sold, generating profits of more than 1 billion euros.
They are everywhere, connected to switches, cutting out the darkness at the touch of a button. Nobody remembers the darkness and we only use candles to set the mood for romantic evenings.
However, the light bulb is a relatively new invention. We will summarise the history of the light bulb, from the relatively imperfect beginnings (Humphry Davy was the pioneer…but his invention barely worked) to the LED revolution (long-lasting and more efficient), to the brightest of them all: Thomas Alva Edison, who perfected the light bulb for the market and became a millionaire... and also became known as the inventor.