By: Nick Ford
Science fiction writers often look for a device which can transport objects through space and time. A wormhole is a theoretical device which might allow such a transport. According to theoretical physics there might be a shortcut through spacetime which could be exploited. When the...
By: Evelyn Berger
Dorothy Hodgkin, (nee Crowfoot) born on May 12, 1910, was a chemist who is credited with significant contributions to the field of protein crystallography. Born in Cairo, Egypt to British parents, she spent much of her early life in Egypt and returned to England very...
By: Evelyn Berger
The International Linear Collider, also known as the ILC, is a linear particle accelerator slated to be built in the late 2010s. It will publish its Technical Design Report in 2012. The host country for the ILC has not yet been chosen, and it is...
By: Lolito Tampus
The earth and its satellite moon are parts and parcels of many wonderful creations. They provide mysterious tales and facts which remain incompletely fathomed and understood by the intelligence of man. Even if they are common sights, they still emit a vastness of miracles that...
The four fundamental forces of nature
By: Trenna Sue Hiler
Physicists recognize four forces of nature. These are identified as interactions that include all known phenomena in nature. Some of the four are easy to recognize because they are seen every day. Others are happening all around, but not necessarily seen.GravityWhile gravity is the...
Biological chemical reactions: Bioluminescence explained
By: Dr Pandula Siribaddana
Bioluminescence is the term describing the emission of light by living organisms as a result of various biochemical mechanisms involving a catalyzing enzyme. Although various species could have different processes in the production of light, the occurrence of bioluminescence will differ from other means of...
By: Dr Pandula Siribaddana
Reactive Oxygen Species (ROS) are oxygen containing molecules which include oxygen ions as well as peroxides. ROS are produced as a natural byproduct following normal cellular metabolism of oxygen and play a vital role in the cellular signaling mechanisms and maintenance of the cellular environment...
What is a positron?
By: Rex Trulove
The word, positron, sounds like it might have come from Star Trek or some other science fiction series or movie. However, positrons are real particles. To understand what they are, it is helpful to understand some of the properties of the particles of an atom...
By: Jerald Zimmerman
To understand AC or DC power, we need to understand the nature of electricity itself. Electricity is the movement of free electrons between areas of different potential through a conductive medium. Electrons have a negative charge. Free electrons are those that can be forced to...
By: Janet Grischy
Some red tides, foxfire, and fireflies are examples of remarkable biological chemical reactions. Bioluminescence is light produced within a living organism, usually by the chemical reaction of luciferin with luciferase. Named for Lucifer, the light-bearer, the compounds produce an eerie yet fascinating glow. Fireflies and...

 

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