Facts about asteroids
By: D. Vogt
Asteroids are small rocky objects which are dispersed throughout the Solar System, though principally found within the asteroid belt between Mars and Jupiter. Similar but icier objects beyond the orbit of Neptune are referred to as Kuiper Belt objects (including dwarf planet Pluto) and, beyond...
Understanding the Danjon Scale of Lunar Eclipse Brightness
By: D. Vogt
The Danjon Scale of Lunar Eclipse Brightness is a handy method of estimating the brightness of a particular lunar eclipse, and therefore having an easy of comparing the brightness of different lunar eclipses. It identifies five levels of brightness, ranging from very dark to a...
By: Tarek Musslimani
Electrophilic aromatic substitution refers to a reaction of the benzene ring in which an electrophile such as a nitro group is added to the ring with subsequent elimination of a hydrogen atom. This type of reaction is typical for aromatic compounds and in particular for...
Stephen Hawking warns about aliens and insults the human race
By: James Boyd
Stephen Hawking recently stirred up some controversy by stating that human contact with an extraterrestrial species might not be a good thing—for humans. Some have responded to his assertion on the likelihood of life forms existing in other planetary systems by citing some sort...
How to make ice cream in a bag
By: Harjot Jassal
Cold, creamy and luscious, ice cream is a much-revered treat. While this dessert is readily available in the freezer cases of grocers and specialty stores, homemade ice cream is in a world of its own. When you make your own ice cream, you combine fresh...
By: Tim Harry
Binoculars may not immediately seem the most obvious tool when it comes to astronomy but in many ways a pair of binoculars has advantages over a telescope, especially for the beginner. Binoculars are portable, durable and are easier in general to use when compared to...
The chemistry of organic explosives
By: Tarek Musslimani
Organic explosives are those types of explosives which are composed of hydrocarbons in addition to an oxidizing source which will help to complete the combustion of the hydrocarbon C-H bonds. In particular and hydrocarbons in general are used often to generate heat due to their...
Applications of group theory in physics
By: ahan abhati
The applications of group theory can be subdivided generally into two broad areas: where the underlying dynamic laws of interaction and therefore all the resulting symmetries are known exactly; the other where these are as yet unknown and only the kinetic symmetries(i.e. those of...
Understanding Newton's Law
By: ahan abhati
The discovery of Newton’s laws of motion was a dramatic moment in the history of science. In narrow sense, it was simply a specific paradigm shift in modern science. This shift was initiated by Copernicus, established by Galileo and Kepler, and completed by Newton...
How the unification of gravity has been discovered
By: Jacob Funk
Since their conceptions, the theories made to explain quantum theory have been at odds with those used to explain relativistic physics. Einstein himself questioned the validity of quantum theory when it predicted that the spin of a particle was absolute regardless of frame of reference...

 

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