Waste metal. Electromagnets can be used to separate magnetic materials such as iron and steel from mixed piles of trash. The metals are pulled out by the magnet while nonmagnetic objects such as glass and plastic stay behind.aste metal. Electromagnets can be used to separate magnetic materials such as iron and steel from mixed piles of trash. The metals are pulled out by the magnet while nonmagnetic objects such as glass and plastic stay behind.
The definition of pessimistic is constantly expecting the worst. An example of pessimistic is a person who always believes that something is going to fail. of or characterized by pessimism; expecting the worst.
Philosophical pessimism is not a state of mind or a psychological disposition, but rather it is a worldview or ethic that seeks to face up to the distasteful realities of the world and eliminate irrational hopes and expectations (such as the Idea of Progress and religious faith) which may lead to undesirable outcomes.