lunes, 13 de junio de 2011

Lightning

Lightning and thunder happen simultaneously, but lightning travels near the speed of light while thunder moves at the speed of sound, approximately 866,000 times slower than the speed of light, which explains the delay between the two phenomena.
The discharge of a lightning bolt can reach 30 million volts–the equivalent of 2.5 million car batteries!
Every second between the time a lightning bolt strikes the ground and the time we hear the thunder corresponds to 300 metres. So, if we count 3 seconds, the lightning struck 900 metres away.

domingo, 12 de junio de 2011

Electricity in nature













Here is a wind turbine in it is use to converts kinectic energy from the wind into mechanical energy.                                                                                                                         
If the mechanical energy is used to drive machinery, such as for grinding grain or pumping water, the device is called a windmill or wind pump.
Developed for over a millennium, today's wind turbines are manufactured in a range of vertical and horizontal axis types.
 The smallest turbines are used for applications such as battery charging or auxiliary power on sailing boats; while large grid-connected arrays of turbines are becoming an increasingly large source of commercial electric power.



domingo, 5 de junio de 2011

Electricity common thing in nature


 
Here is a solar panel or photovoltaic panel, it´s a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications.                                            

Because a single solar panel can only produce a limited amount of power, many installations contain several panels. A photovoltaic system typically includes an array of solar panels, an inverter, may contain a battery and interconnection wiring.

jueves, 26 de mayo de 2011

Electricity that have something in common with nature

Here is a lightning bolt is an atmospheric electrostatic discharge accompanied by thunder, which typically occurs during thunderstrooms, and sometimes during volcanis erupsions or dust storms.