What is string theory and what does it mean for human kind? String theory is a theory that seeks to unify the four forces of nature and explain the origins of our universe. Before the string theory, it was impossible to combine the theories of General Relativity and Quantum Mechanics. By using tiny vibrating strings of energy that are 10-33 m in length, scientists can create all the fundamental particles we’ve started to find using particle accelerators. Then, using these particles they can try to unite the two different theories and create a universe that is perhaps, more perfect than the Standard Model will allow. And what’s great about string theory is that it explains more than just how gravity, electromagnetic force, weak nuclear force and strong nuclear force work, but it also can make predictions about how our universe works, how the Big Bang formed and even possibly whether there are other unseen worlds that are right next to us! What this all means is that string theory just might explain things that General Relativity and Quantum Mechanics just can’t explain!
One thing that sort of sets string theory apart from other theories in science is its requirement of eleven different dimensions –– up, down, right, left, back, forth and time as well as seven other super small dimensions that humans cannot notice. An analogy to consider is a telephone line that is very far away. To a distant observer, the telephone line has one dimension (length) but in reality has many more (width, height, depth, clockwise and counterclockwise). This is important because it means that the strings can vibrate and move according to these overlapping dimensions and create different particles. This unification is a jewel in the minds of String Th...
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... of the fuss about the validity of string theory and the difficulty in proving it, there are many promising implications and applications of string theory –– among the most interesting is the possibility of higher universes and worm hole travel. String theory is also very mathematically sound, which makes it very likely that at least parts of it are valid and true. Though the fundamental part of string theory is vastly different than anything else in physics, the behavior and nature of objects larger than strings stays the same and that is what makes string theory so unobtrusive and perhaps welcome in the physics community. Despite its acceptance, string theory should also be known as a radical idea that unifies the universe’s matter and forces, explains the big bang and higher universes, and finally completes the quest for unification that is so pursued in physics.
Until recently, theorists believed that wormholes could exist for only an instant of time, and anyone trying to pass through would run into a singularity. But Khalili shows the reader that more recent calculations show that a truly advanced civilization might be able to make wormholes work. By using something physicists call “exotic matter,” which has a negative energy, the civilization could prevent a wormhole from collapsing on itself. Perhaps someday in the far future, wormholes will become a useful asset in universal transportation.
In many theories that come into the light in the scientific field, there are always gaps, there are always issues within each that have no explanation to them. For example, the big bang theory, this is a theory that attempts to explain how the universe was created. This theory states that the universe began as a very small, dense, and hot ball (Imagine the universe all put into a ball the size of a pen tip) with no stars or atoms. This ball then expanded incredibly quickly. The universe was then formed as the way it is now. Personally, I feel as if this theory has a major hole that prevents me from believing it is possible. This hole is, “What exactly put this ball into motion in the first place?”
Einstein’s Special Theory of Relativity has had a colossal impact on the world and is the accepted physical theory reg...
“A new (but yet unproven) theory proposes that all matter—from the page of this book to the skin of a peach—consists of tiny loops of vibrating strings. String (or Superstring) Theory,
Part I: The Edge of Knowledge Chapter 1: Tied Up with Strings This is the introductory section, where the author, Brian Greene, examines the fundamentals of what is currently proven to be true by experimentation in the realm of modern physics. Green goes on to talk more about "The Basic Idea" of string theory. He describes how physicists are aspiring to reach the Theory of Everything, or T.O.E. Some suspect when string theory is completely understood that it might turn out to become the T.O.E.Part II: The Dilemma of Space, Time, and Quanta Chapter 2: Space, Time, and the Eye of the Beholder In the chapter, Greene describes how Albert Einstein solved the paradox about light. In the mid-1800's James Maxwell succeeded in showing that light was actually an electromagnetic wave.
An underlying theme present throughout the series is the possibility that our existence is not the only one. According to current theories in physics, it is entirely possible that our universe is just one of many universes f...
... a theory should be able to explain a wide variety of things, not just only what it was intended to explain.
The simplest case to imagine is a single string traveling in a flat spacetime in d dimensions, meaning that it is traveling across space while time is ticking, so to speak. A string is a one-dimensional object, meaning that if you want to travel along a string, you can only go forwards or backwards in the direction of the string, there is no sideways or up and down on a string. The string can move sideways or up and down in spacetime, though, and as the string moves around in spacetime, it sweeps out a surface in spacetime called the string worldsheet, a two-dimensional surface with one dimension of space and one dimension of time.
Natashia Trethewey’s work Beyond Katrina reflects on the past happenings that befell her hometown as well as that of her own brother Joe. Her poem “Theories of Time and Space” offers a powerful statement that encourages readers to think long and hard about its relation to the remainder of the story. The focus being on the concept of home and what it is means to not only be a part of one but also to be able to return to said home. Trethewey establishes this concept well throughout many aspects of her book, especially in her title choices and the way she phrases her words.
The Ultimate Nature of Matter. The theory of quantum mechanics has divided the atom into a number of fundamental sub-atomic particles. Although the physicist has shown that the atom is not a solid indivisible object, he has not been able to find a particle which does possess those qualities. Talk of particles, though, is misleading because the word suggests a material object.
At the core of Newtonian physics was the fact that space and time were absolute. Newton’s absolute space was the space of everyday experience with its three dimensions: east-west, north-south, and up-down. This space gives us our sense of length, breadth, and height; according to Newton. We all, regardless of our motion, will agree on the length, breadth, and height of an object, so long as we make sufficiently accurate measurements. Newton’s absolute time was the time that flows inexorably forward as we age. It is a time whose flow is experienced in common by all humanity.
Throughout the ages, outstanding physicists, to the movies, to some of the greatest science fiction novels of all time, have pondered the idea of time-travel. The thought of actually being able to travel to another time or universe has long since enthralled, enveloped, and overwhelmed some of the greatest minds in the history of physics. No one person can actually prove any of their theories, but a few actually make sense. Meaning that they do not violate the laws of physics. One of the main theories suggested, are wormholes. Wormholes are considered to connect two regions of flat space-time, two universes, or two parts of the same universe. There is a lot of theoretical evidence that wormholes exist, with an equal amount of evidence that they do not exist. However, no matter what one’s belief is, the existence of wormholes still makes you wonder…
In The Quantum Enigma, Rosenblum and Kuttner address the impact of the “Newtonian worldview” on our ability to understand and explain the phenomena of the physical world. Science has been able to greatly advance our knowledge of the natural world over the last several centuries largely due to this worldview. In this paper, five tenets of the Newtonian worldview will be summarized; two of these points—those found to be the most and least defensible—will be discussed in greater detail. As a final point, a discussion will be laid out regarding which of the five precepts, if rejected by modern physics, would be the most disturbing to give up.
Special relativity is a theory that has been accepted by physics as a theory relating to the relationship between space and time. This theory is really important to physics, and all physics teacher such as yourself because special relativity explains the observed fact that the speed of light stays and remains constant regardless of the direction or velocity of its motion. Special relativity now plays an important role in astronomical observation. Special relativity is more precisely about speed. To be even more precisely this speed deals with 299,792,458 ms-1, which is the speed of light, or the rate at which light travels (in meters) per one second.
This is probably the greatest discovery imaginable; however, the universe still seems to be a very controversial subject.