By: D. Vogt
A black hole is one of the theoretical remnants of a dying star - one so large that the collapsing core left behind after its explosive supernova is so gravitationally powerful that even light cannot escape. At present there are no confirmed black holes, but...
Defining a neutron star
By: D. Vogt
A neutron star is a type of dead star, or stellar remnant, which forms during the death of a star much larger than our own, but smaller than the massive blue giants which (it is believed) collapse into black holes. The resulting neutron stars are...
The existence of space and time warps
By: Terrence Aym
Eclipse proves space warps existThe first experiment to test Albert Einstein's 1915 assertion of warped space—embodied within his general theory of relativity—occurred on May 29, 1919 during a solar eclipse. The calculations made after the observation proved that mass warps space. In the...
By: Tarek Musslimani
The chemistry of nitrogen containing organic compounds is mostly governed by the basicity and nucleophilicity of the electron lone pair on nitrogen except when there is more electronegative atom than nitrogen that is attached to nitrogen such as occurs in nitrosylchloride. In this case nitrogen...
By: Tarek Musslimani
Organic chemistry of oxygen bearing carbon centers are alcohols and ethers in addition to carboxylic acids. Peroxides can also be organic but usually inorganic such as hydrogen peroxide. A well known example of alcohol is ethanol. This compound finds uses in alcohol and the beer...
By: D. Vogt
Nitrate and nitrite are both polyatomic ions formed from nitrogen and oxygen: essentially, nitrate molecules contain one nitrogen and three oxygen atoms, but nitrite molecules each contain one nitrogen and only two oxygen atoms. Despite the similarities there are substantial differences in properties and uses...
By: Tarek Musslimani
Transition metals are a group of special metals that are located in the periodic table between the alkaline earth metals and the nonmetals. They have unfilled d-shells with electrons. By definition transition metals are those metals in the periodic table with incompletely filled d-shells with...
Past missions to Saturn
By: D. Vogt
Saturn has become one of the best-known of the gas giants because of the lengthy and continuing Cassini mission, so in a way it is surprising that relatively few space probes have actually reached this majestic planet. On the other hand, of course, the challenges...
The use of composite materials in aviation
By: Jordan Cropper
In the early days of aviation, the pioneers of flight struggled with one major problem - weight. Early engines had difficulty producing enough thrust to overcome the relatively heavy airframes. However, improved materials technology has lead in the last few decades to the creation of...
Biography: Max Planck
By: D. Vogt
Max Planck (1858-1947) was a famous physicist from Germany, the first to postulate what is now known as quantum theory, for which he won the Nobel Prize. Planck's career began before that of Albert Einstein, whose name is more recognized in popular culture today, but...

 

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