In 2005 over 2,000 desalination plants with a capacity of more than 100m3/day had been installed or contracted in every state in the U.S. with a total capacity of more than 6 million m3/day. Only 7% of that capacity was for seawater desalination, while 51% used brackish water and 26% used river water as water source.
Find out about the lever, one of the most basic forms of a machine, which helps lift heavy objects with much less effort, through this fun and animated learning module. Also learn about a variety of levers from this very same module. The lever is one of the most basic forms of a machine. Levers help us lift loads with lesser effort. Even though this looks simple there are many things going on in order to lift the object easily. A lever can be described as a long rigid body with a fulcrum along its length.
Simple machines can make us all strong! When you hear the word machine, you probably think of something like a bulldozer or a steam locomotive. But in science, a machine is anything that makes a force bigger. So a hammer is a machine. A knife and fork are a pair of machines. And even an egg whisk is a machine. All these machines have one thing in common: when you apply a force to them, they increase its size and apply a greater force somewhere else.