Recently joined the Geology Museum Valentine Masachs a showcase where you can check the power consumption of three different types of light bulbs made with minerals in the future.
In the switch that launches each type of bulb, you can check the current intensity generated and see the equivalent in watts, and the corresponding energy savings
The bulbs are: a halogen, a low power and led. Each gives the same level of intensity of light on the future of the minerals which have emerged, while launching a small mill operated light energy it receives.
You can also see the different shades of colors that give a strip of leds in the colors red, green and blue, and the combination of them all generates as white.