Too Close for Comfort essays

Too Close for Comfort essays Interpersonal relationships are a one of the most common ways human beings interact with one another other. There is no one set definition because it is such a broad subject with many different components that make communication interpersonal. A good way to explain Interpersonal Communication is, There are few participants involved, the interactants are in close physical proximity to each other, there are many sensory channels used, and feedback is immediate. (Gouran, Dennis, W.E. Wiethoff, First off, I will introduce you to a young woman named Lexi. I first met her last summer when I came down from Reno to attend an open cheerleading clinic. The first time I set eyes on her my heart stopped and I couldnt breath, it was going to be a wonderful and exciting year for me. I was introduced to her and couldnt wait to start talking and getting to know her. At first, over the summer, it was merely a hello goodbye kind of relationship. It didnt help that she was living in Ohio and I was living in Reno. We stayed in contact with one other throughout the summer, not talking for more than fifteen to twenty minuets at a time. When our cheerleading season started at the end of July and I finally got settled down in my house we started to have more conversations and were interacting with each other more often, going to parties, bowling, watching movies together, and so on. Our relationship was building, becoming more personal and intimate so to speak. We also had a non-verbal way of interacting with one another, like flirting. We would wrestle and play fight, which in my mind is a strong communication...

The Fundamentals of Elementary Particle Physics

The Fundamentals of Elementary Particle Physics One of the most startling discoveries of the 20th century was the sheer number of particles that exist in the universe. Though the concept of fundamental, indivisible particles goes back to the ancient Greeks (a concept known as atomism), it wasnt really until the 1900s that physicists began to explore what was going inside matter at the smallest levels. In fact, quantum physics predicts that there are just 18 types of elementary particles (16 of which have been detected by experiment already). It is the goal of elementary particle physics to continue searching for the remaining particles. The Standard Model of Particle Physics The Standard Model of Particle Physics is at the core of modern physics. In this model, three of the four fundamental forces of physics are described, along with the particles that mediate these forces gauge bosons. (Technically, gravity isnt included in the Standard Model, though theoretical physicists are working to extend the model to include a quantum theory of gravity.) Groups of Particles If theres one thing that particle physicists seem to enjoy, its dividing up particles into groups. Here are a few of the groups which particles exist in: Elementary Particles - The smallest constituents of matter and energy, these particles which dont seem to be made from combinations of smaller particles. Fermions - Fermions are particles that have a particle spin equal to a half-integer value (-1/2, 1/2, 3/2, etc.). These particles make up the matter that we observe in our universe.Quarks - A class of fermion. Quarks are the particles that make up hadrons, such as protons and neutrons. There are 6 distinct types of quarks:Bottom QuarkStrange QuarkDown QuarkTop QuarkCharm QuarkUp QuarkLeptons - A class of fermion. There are 6 types of leptons:ElectronElectron NeutrinoMuonMuon NeutrinoTauTau NeutrinoBosons - Bosons are particles that have a particle spin that is equal to an integer (1, 2, 3, etc.). These particles are what mediate the fundamental forces of physics under the quantum field theories.PhotonW BosonZ BosonGluonHiggs Boson - part of the Standard Model. Detected for the first time in 2012 by the Large Hadron Collider.Graviton - theoretically predicted as part of quantum gravity, but not actually part of the Standard Model Composite Particles Hadrons - Particles made up of multiple quarks bound together.Baryons (fermions)Nucleons - protons neutronsHyperons - short-lived particles composed of strange quarksMesons (bosons)Atomic Nuclei - protons and neutrons form together to create the atomic nucleusAtoms - The basic chemical building block of matter, atoms are composed of electrons, protons, and neutrons.Molecules - A complex structure composed of multiple atoms bonded together. The study of how atoms bond together to form various molecular structures is the foundation of modern chemistry. A Note on Particle Classification It can be hard to keep all the names straight in particle physics, so it might be helpful to think of the animal world, where such structured naming might be more familiar and intuitive. Humans are primates, mammals, and also vertebrates. Similarly, protons are baryons, hadrons, and also fermions. The unfortunate difference is that the terms tend to sound similar to each other. Confusing bosons and baryons, for example, is far easier than confusing primates and invertebrates. The only way to really keep these different particle groups separate is to just carefully study them and try to be careful about which name is being used. Matter Forces: Fermions Bosons All elementary particles in physics are classified as either fermions or bosons. Quantum physics demonstrates the particles may have an intrinsic non-zero spin, or angular momentum, associated with them. A fermion (named after Enrico Fermi) is a particle with a half-integer spin, while a boson (named after Satyendra Nath Bose) is a particle with an integer spin. These spins result in different mathematical applications in certain situations, which is far beyond the scope of this article. For now, just know that the two types of particles exist. Simple mathematics of adding integers and half-integers show the following: Combining an odd number of fermions results in a fermion (because the total spin will still be a half-integer value)Combining an even number of fermions results in a boson (because the total spin will now be an integer value) Breaking Down Matter: Quarks Leptons The two basic constituents of matter are quarks and leptons. Both of these subatomic particles are fermions, so all bosons are created from an even combination of these particles. Quarks are fundamental particles which interact through all four of the fundamental forces of physics: gravity, electromagnetism, weak interaction, and strong interaction. Quarks always exist in combination to form subatomic particles known as hadrons. Hadrons, just to make things even more complicated, are divided into mesons (which are bosons) and baryons (which are fermions). Protons neutrons are baryons. In other words, they are composed of quarks such that their spin is a half-integer value. Leptons, on the other hand, are fundamental particles that do not experience strong interaction. There are three flavors of leptons: the electron, the muon, and the tau. Each flavor is composed of a weak doublet, which is made up of the aforementioned particle along with a virtually massless neutral particle called a neutrino. Thus, the electron lepton is the weak doublet of electron electron-neutrino. Edited by Anne Marie Helmenstine, Ph.D.