Wednesday, April 17, 2013
A vacuum cleaner is quite a complicated machine. The important parts of the machine include an intake port, an exhaust port, an electric motor, a fan and a porous bag. The working of a vacuum cleaner is similar to the principle based on which liquid is sipped through a straw.
When a person sips through a straw, suction mechanism takes place. When liquid is sucked up, pressure between the bottom and top of the straw drops. The presence of greater pressure to the fluid at the bottom than the top pushes the fluid up. Vacuum cleaner applies the same principle.
Posted by Rajeev at 12:52 PM
Tuesday, April 2, 2013
Growing more number of trees is always important for the environment. This process is termed as afforestation. In today’s world as we cut down more trees to serve the needs of the ever growing population, planting an equal number of trees is important.
This process of afforestation is done as planned programs by the government and non-governmental organizations. Forests have been exploited severely over the years to accommodate the needs of the public. To compensate for the loss caused to forest cover, it is essential to undertake planned tree planting programs. Create forest treasures for the future by afforestation programs.
Posted by Rajeev at 11:57 PM