Category:Science And Technology

Draize test

The Draize test is a test performed on animals to test for acute toxicity in cosmetics and common household products. It was named after Dr. John Henry Draize, a toxicologist with the U.S FDA. He was the principal author of a report that came out in 1944 that outlined the basic features of this test to provide an idea of the irritancy of the tested substance. This technique was then used by the FDA to assess the safety for a number of products including sunscreens and insecticides. Even though John Draize never personally attached his name to the technique, assessment of irritancy are called Draize tests. Depending on the target organ of the test, the Draize test may be called the 'Draize Eye Test' or the 'Draize Skin Test'. More...

Green power Green power refers to environmentally preferable energy and energy technologies. From the point of view of the consumer, it also refers to electricity products that include significant proportions of electricity generated from energy resources that are both renewable and environment friendly. More...

The Science and Technology section at Copperwiki focuses on the ways innovations can be conducted and applied to meet human needs while preserving the life support systems of the planet.

With science and technology are we creating abundance, or an ecological crisis? Do advanced technologies make us more secure, or escalate dangers? Find answers to many such questions through our well researched articles.

This section deals extensively with developments which ensure that in our efforts to fulfill our needs we do not compromise with the needs of the future generations. Our articles dwell on the choices we make to use technology to shape our world and share concerns about our choices.

It is an ideal platform for sharing visions among conscious living individuals for creating an improved quality of life in ourselves, our community and our world.

Hydrogen

• Hydrogen gas is lighter than air and, as a result, it rises in the atmosphere. This is why H₂ is not found by itself on earth.
• Hydrogen has the highest energy content as compared to any other common fuel by weight(about three times more than gasoline), but the lowest energy content by volume.
• Like electricity, H₂ is an energy carrier and must be produced from another substance.
• Steam reforming is currently the least expensive method of producing hydrogen and accounts for about 95% of the hydrogen produced in the US. The process however releases greenhouse gas.
• Though electrolysis releases no emissions while splitting hydrogen from water, it is an expensive process.
• There are currently about 200 hydrogen-fueled vehicles in the United States – mostly in California. More ...