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Help. Cool stuff. Synzen’s Music Profile. Tiger Army – Discover music, videos, concerts, & pictures at Las. Hellcatrecords's Channel. Linkin Park – Discover music, videos, concerts, & pictures at La. Linkinparktv's Channel. LINKIN PARK - UNTIL IT'S GONE [Official Lyric Video]Pre-order THE HUNTING PARTY: on iTunes: Director: Austin SayaNew album - THE HUNTING PARTY - Out June 17 Carnivores Tour with 30 Seconds To Mars and AFI this summer.

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Visit for dates.For more information, visit Linkin Park videos: Park on iTunes: Like Linkin Park at on Twitter at Lyrics: A fire needs a space to burnA breath to build a glowI've heard it said a thousand timesBut now I know That you don't know what you've gotOh you don't know what you've gotNo you don't know what you've gotUntil it's gone I thought I kept you safe and soundI thought I made you strongBut something made me realizeThat I was wrong 'Cause finding what you got sometimesMeans finding it aloneAnd I can finally see your lightWhen I let go 'Cause you don't know what you've gotUntil it's gone'Til it's gone...

DJ Krush – Discover music, videos, concerts, & pictures at Last. DJ Shadow – Discover music, videos, concerts, & pictures at Last. Djshadow's Channel. Sneaker Pimps – Discover music, videos, concerts, & pictures at. AFI – Discover music, videos, concerts, & pictures at Afireinside's Channel. Periodic table. Standard 18-column form of the periodic table. The colors used in the version of the table shown here signify different categories of elements, as listed below in the Layout section, under the larger table. The rows of the table are called periods; the columns are called groups, with some of these having names such as halogens or noble gases. Since, by definition, a periodic table incorporates recurring trends, any such table can be used to derive relationships between the properties of the elements and predict the properties of new, yet to be discovered or synthesized, elements.

As a result, a periodic table—whether in the standard form or some other variant—provides a useful framework for analyzing chemical behavior, and such tables are widely used in chemistry and other sciences. Standard Model. The Standard Model of particle physics is a theory concerning the electromagnetic, weak, and strong nuclear interactions, as well as classifying all the subatomic particles known.

Standard Model

It was developed throughout the latter half of the 20th century, as a collaborative effort of scientists around the world.[1] The current formulation was finalized in the mid-1970s upon experimental confirmation of the existence of quarks. Since then, discoveries of the top quark (1995), the tau neutrino (2000), and more recently the Higgs boson (2013), have given further credence to the Standard Model.

Because of its success in explaining a wide variety of experimental results, the Standard Model is sometimes regarded as a "theory of almost everything". Historical background[edit] Electron. History[edit] In the early 1700s, Francis Hauksbee and French chemist Charles François de Fay independently discovered what they believed were two kinds of frictional electricity—one generated from rubbing glass, the other from rubbing resin.


From this, Du Fay theorized that electricity consists of two electrical fluids, vitreous and resinous, that are separated by friction, and that neutralize each other when combined.[17] A decade later Benjamin Franklin proposed that electricity was not from different types of electrical fluid, but the same electrical fluid under different pressures. He gave them the modern charge nomenclature of positive and negative respectively.[18] Franklin thought of the charge carrier as being positive, but he did not correctly identify which situation was a surplus of the charge carrier, and which situation was a deficit.[19] Discovery[edit] A beam of electrons deflected in a circle by a magnetic field[25] Robert Millikan Atomic theory[edit]

Electromagnetism. Electromagnetism, or the electromagnetic force is one of the four fundamental interactions in nature, the other three being the strong interaction, the weak interaction, and gravitation. This force is described by electromagnetic fields, and has innumerable physical instances including the interaction of electrically charged particles and the interaction of uncharged magnetic force fields with electrical conductors. Magnetism. A magnetic quadrupole Magnetism is a class of physical phenomena that includes forces exerted by magnets on other magnets. It has its origin in electric currents and the fundamental magnetic moments of elementary particles.

These give rise to a magnetic field that acts on other currents and moments. All materials are influenced to some extent by a magnetic field. The strongest effect is on permanent magnets, which have persistent magnetic moments caused by ferromagnetism. The magnetic state (or phase) of a material depends on temperature (and other variables such as pressure and the applied magnetic field) so that a material may exhibit more than one form of magnetism depending on its temperature, etc. Electroencephalography. Hertz. "Megahertz", "MHz", "Gigahertz" and "GHz" redirect here.


Top to bottom: Lights flashing at frequenciesf = 0.5 Hz (hertz), 1.0 Hz and 2.0 Hz, i.e. at 0.5, 1.0 and 2.0 flashes per second, respectively. The time between each flash – the period T – is given by 1⁄f (the reciprocal of f‍), i.e. 2, 1 and 0.5 seconds, respectively. Weak interaction. History of electromagnetism. The history of electromagnetic theory begins with ancient measures to deal with atmospheric electricity, in particular lightning.[1] People then had little understanding of electricity, and were unable to scientifically explain the phenomena.[2] In the 19th century there was a unification of the history of electric theory with the history of magnetic theory.

History of electromagnetism

It became clear that electricity should be treated jointly with magnetism, because wherever electricity is in motion, magnetism is also present.[3] Magnetism was not fully explained until the idea of magnetic induction was developed.[4] Electricity was not fully explained until the idea of electric charge was developed. Ancient and classical history[edit] The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon, without a theory to explain its behavior and often confused with magnetism. Middle Ages and the Renaissance[edit]