Nowadays, plenty of the hours during our day, we got link wITh web. We are spending plenty of hours next to the laptop, working on it, having fun, meeting new colleagues.
Wind energy is 1 of the renewable energy sources. Have you ever wondered about how such energy is created? To be quite clear, energy is obtained by means of special turbines. Those turbines convert mechanical energy into electricity. Nevertheless, this is necessary to keep in mind that wind turbines will create electricity only when the wind blows. What’s more, the speed of wind gotta be stronger than “start speed”. Alternatively, turbines remain still and the energy is not manufactured.
We have many interesting inventions which were created in XIX and XX century such as electricity, computers, the Web and all of the things related with constructions. Let’s take one of those devices – elevators.
These days almost everybody knows how does an automobile look like. Even little kids, who have just begun to learn new words, find it quite easy to understand basic differences between some automobiles. Despite the fact that for a variety of people contemporarily it is not really impressive, we should be aware of the fact that the children some decades ago found it impossible to even imagine a machine that would give us a possibility to travel only with the use of fuel.