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  2. Quark - Wikipedia

    en.wikipedia.org/wiki/Quark

    A proton is composed of two up quarks, one down quark, and the gluons that mediate the forces "binding" them together. The color assignment of individual quarks is arbitrary, but all three colors must be present; red, blue and green are used as an analogy to the primary colors that together produce a white color.

  3. Quark (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Quark_(disambiguation)

    Quark (company), a software manufacturer Quark (kernel), a microkernel used in the MorphOS operating system QuArK or Quake Army Knife, a game editor; Quark (hash function), a cryptographic hash function

  4. Anatomy of the human heart - Wikipedia

    en.wikipedia.org/wiki/Anatomy_of_the_human_heart

    The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...

  5. Matter - Wikipedia

    en.wikipedia.org/wiki/Matter

    The broader meaning is just quark matter that contains three flavors of quarks: up, down, and strange. In this definition, there is a critical pressure and an associated critical density, and when nuclear matter (made of protons and neutrons ) is compressed beyond this density, the protons and neutrons dissociate into quarks, yielding quark ...

  6. Hadron - Wikipedia

    en.wikipedia.org/wiki/Hadron

    A hadron is a composite subatomic particle.Every hadron must fall into one of the two fundamental classes of particle, bosons and fermions. In particle physics, a hadron (/ ˈ h æ d r ɒ n / ⓘ; from Ancient Greek ἁδρός (hadrós) 'stout, thick') is a composite subatomic particle made of two or more quarks held together by the strong interaction.

  7. What Do All the Heart Emojis Mean? A Guide To Using the ... - AOL

    www.aol.com/lifestyle/heart-emojis-mean-guide...

    Choosing the right heart emoji to add to a message or caption can be difficult, given the many options. Here's a guide to every color and type of heart emoji.

  8. Here's the 411 on All the Different Meanings for Heart Emojis

    www.aol.com/lifestyle/heres-411-different...

    One of the few heart emojis with a totally clear-cut meaning, this yellow and mellow fellow stands for platonic love. Send it to close friends, folks you'd like to get to know better, social media ...

  9. Here's the Real Meaning Behind the Black Heart Emoji - AOL

    www.aol.com/lifestyle/heres-real-meaning-behind...

    For starters, the meaning of the black heart emoji is going to depend on the specific context. For example, an "LOL" from your Mom gives off a much different vibe than if your bestie sent it. The ...