Category: Science

Strain in Engineered Components

Strain is a measurable effect in an engineered components caused by the application of a force to that component. Although there are several types of strain used in different situations, the most commonly used is the normal strain, which is defined as the deformation per unit length. Stress and Strain Stress is proportional to strain […]

World Hydroelectric Power Generation

Hydroelectric power generation, or the conversion of potential energy of reservoir water to electricity, makes up about 20% of all electricity generation in the world today, and is by far the largest source of electricity generation among renewable energy sources, according to the REN21 2006 Global Status Report. (PDF) History of Worldwide Hydroelectric Power For […]

The Dangers of Herbicides in Food Crops

Agribusinesses and home gardeners alike commonly use herbicides to clear their harvest of undesirable growth. In 1995, the USDA studied 7,000 samples of fruits and vegetables for sale and found the residue of more than 65 pesticides. Baby food and foods commonly eaten by children often have higher numbers of pesticide residues than other foods, […]