- published: 06 Jun 2013
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The top quark, also known as the t quark (symbol: t) or truth quark, is the most massive of all observed elementary particles. Like all quarks, the top quark is an elementary fermion with spin-1⁄2, and experiences all four fundamental interactions: gravitation, electromagnetism, weak interactions, and strong interactions. It has an electric charge of +2⁄3 e, It has a massive mass of 173.34 ± 0.27 (stat) ± 0.71 (syst)7000100000000000000♠100 GeV/c2, which is about the same mass as an atom of tungsten. The antiparticle of the top quark is the top antiquark (symbol: t, sometimes called antitop quark or simply antitop), which differs from it only in that some of its properties have equal magnitude but opposite sign.
The top quark interacts primarily by the strong interaction, but can only decay through the weak force. It decays to a W boson and either a bottom quark (most frequently), a strange quark, or, on the rarest of occasions, a down quark. The Standard Model predicts its mean lifetime to be roughly 6975500000000000000♠5×10−25 s. This is about a twentieth of the timescale for strong interactions, and therefore it does not form hadrons, giving physicists a unique opportunity to study a "bare" quark (all other quarks hadronize, meaning that they combine with other quarks to form hadrons, and can only be observed as such). Because it is so massive, the properties of the top quark allow predictions to be made of the mass of the Higgs boson under certain extensions of the Standard Model (see Mass and coupling to the Higgs boson below). As such, it is extensively studied as a means to discriminate between competing theories.
Music by Ant Dakini; Vocals by Sergio O http://www.antiquark.net Remix by Red Flag http://www.redflag.org Buy this track on itunes: https://itunes.apple.com/us/album/riches-to-rags/id644103903 Buy this track on amazon: http://www.amazon.com/Riches-to-Rags-Explicit/dp/B00CV8KXRO/ref=sr_shvl_album_1?ie=UTF8&qid;=1370583621&sr;=301-1
IMPORTANTE!!! ATTIVARE I SOTTOTITOLI NEL VIDEO PER VISUALIZZARLI!!! Dopo aver studiato i quark in fisica, ho deciso di lasciarvi la versione sottotitolata in italiano della magnifica canzone di Hank Green! Enjoy :D ps: fatemi sapere se trovate errori di traduzione o traduzioni migliori! Alcune frasi le ho modificate, ma ho cercato sempre di mantenere lo stesso senso. TESTO ORIGINALE: A quark is a fundamental constituent of matter Observed in 1968 through deep elastic scatter. We found that protons aren't as simple as we thought. We thought they were solid particles but they are not. Protons in fact are made up of three separate pieces. It just gets more confusing as our knowledge increases. But that is what a quark is; It's a piece of a proton, And they also make up other things inclu...
AntiQuark http://www.antiquark.net performing at The Grand in El Cajon, California. Ant Dakini is wearing a top by Passione Boutique http://www.passioneboutique.com
http://dft.ba In which Hank plays a song for you...the video was made in Illustrator and After Effects and it took a ridiculously long time to do. I hope you like it. http://dft.ba/quarks HERE ARE A LOT OF LINKS TO NERDFIGHTASTIC THINGS: Shirts and Stuff: http://dftba.com/artist/30/Vlogbrothers Hank's Music: http://dftba.com/artist/15/Hank-Green John's Books: http://amzn.to/j3LYqo ====================== Hank's Twitter: http://www.twitter.com/hankgreen Hank's Facebook: http://www.facebook.com/hankimon Hank's tumblr: http://edwardspoonhands.tumblr.com John's Twitter: http://www.twitter.com/realjohngreen John's Facebook: http://www.facebook.com/johngreenfans John's tumblr: http://fishingboatproceeds.tumblr.com ====================== Other Channels Crash Course: http://www.youtube.co...
Video shows what anti-top quark means. the antiquark corresponding to the top quark. Anti-top quark Meaning. How to pronounce, definition audio dictionary. How to say anti-top quark. Powered by MaryTTS, Wiktionary
A quark ( /ˈkwɔrk/ or /ˈkwɑrk/) is an elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei.[1] Due to a phenomenon known as color confinement, quarks are never directly observed or found in isolation; they can be found only within baryons or mesons.[2][3] For this reason, much of what is known about quarks has been drawn from observations of the hadrons themselves. There are six types of quarks, known as flavors: up, down, strange, charm, bottom, and top.[4] Up and down quarks have the lowest masses of all quarks. The heavier quarks rapidly change into up and down quarks through a process of particle decay: the transformation from a higher ma...
Hank Green live in the RDS Dublin! Song lyrics: A quark is a fundamental constituent of matter Observed in 1968 through deep elastic scatter We found that protons aren't as simple as we thought We thought they were solid particles but they are not Protons in fact are made up of three separate pieces It just gets more confusing as our knowledge increases But that is what a quark is; it's a piece of a proton And they also make up other things including the neutron Oh up, down, strange, charm, top, bottom If you don't know what a quark is, it don't matter you still got 'em And with leptons and bosons, unless something's amiss They make up everything that we can see and that we know exists Quarks can join together in two different ways, Baryons and Mesons, but most instantly decay. If a p...
http://demonstrations.wolfram.com/CombiningColoredQuarks/ The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily. Quarks, the building blocks of hadrons (baryons and mesons), exist in six different flavors, namely up (u), down (d), strange (s), charm (c), bottom (b), and top (t), along with their corresponding antiquarks. For each flavor, there exist three possible... Contributed by: S. M. Blinder
Learn how to say Anti-Quark correctly with EmmaSaying's "how do you pronounce" free tutorials http://www.emmasaying.com Care to show your support? Give me some love on Patreon here: http://www.patreon.com/EmmaSaying ~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ Emma's English Pronunciation Course - Get a 50% Off Coupon for FREE! http://emmasaying.com/english-pronunc... * Limited Quantity - Better Hurry Up :-) ~~~~~~~~~~~~~~~~~~~~~~~~~~
What is QUARK? What does QUARK mean? QUARK meaning, definition & explanation. A quark is an elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei. Due to a phenomenon known as color confinement, quarks are never directly observed or found in isolation; they can be found only within hadrons, such as baryons (of which protons and neutrons are examples), and mesons. For this reason, much of what is known about quarks has been drawn from observations of the hadrons themselves. Quarks have various intrinsic properties, including electric charge, mass, color charge and spin. Quarks are the only elementary particles in the Standard Model of particl...