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Showing posts with the label planets

How exactly does curved space-time describe the force of gravity?

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  Today we will be talking about the Theory of Relativity and how exactly does curved space-time describe the force of gravity. So, basically, Einstein discovered that space and time can't be separated. They are part of the same thing, and gravity is actually produced by bending and warping this "spacetime", like a heavy ball sitting on a sheet of elastic. (for the simpler answer to the title's question look at the bottom of the page)      Classical(or Newtonian) Physics Time can be considered as a dimension, just like distances. In this way, our universe is four dimensional: three for space and one for time. Before Einstein came along, people thought that these dimensions were fixed: anyone who looked at something would measure the same distances, see the same things happening at the same time.     Special Relativity Einstein realised that this is not true. Two events that appear simultaneous to one observer may seem to happen at different times to a diffe...

THE BIG BANG THEORY

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  Hi, today we are back with another theory. We will talk about the Big Bang Theory. No further introductions, let's get right into it!   The Big Bang Theory is an explanation, based mostly on mathematical models, on how and when the Universe came into existence. The cosmological model of the Universe described in the Big Bang theory explains how it initially expanded from a state of infinite density and temperature, known as the primordial (or gravitational) singularity. This expansion was followed by cosmic inflation and a massive temperature drop. During this phase, the Universe ballooned at a much faster rate than the speed of light. Subsequently, the Universe was reheated to a point where elementary particles (quarks, leptons, and so on) before a gradual decrease in temperature (and density) led to the formation of the first protons and neutrons. A few minutes into the expansion, protons, and neutrons combine to form primordial hydrogen and helium-4 nuclei. The estimated...

THE MULTIVERSE (explanation, etc.)

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  Hi, I'm back and, today, we are gonna talk about a pretty known concept(theory). The concept of the multiverse. No further introduction, let's get right into it!      So, even if you know about it, you may ask, what exactly is this multiverse concept? The multiverse concept is the idea that our universe is just one of many other universes. The multiverse is said not to be really a theory but a result of theories. Simply, if we understand reality well enough, a multiverse should exist. Our universe is so vast it's difficult to fully comprehend. This theory is not especially compelling, so most scientists remain skeptical of the multiverse idea. Multiverse theory suggests that inflation may not occur at the same rate everywhere. Individual universes may "pinch off" other expanding universes, creating an infinite "sea" of inflating universes.      Take a look at five types of multiverses and how they could actually exist: 1. Bubble Universes   -...

THE BRANEWORLD

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Hi, today we are gonna explore another interesting "universe" theory. No further and boring introductions, let's get right into it! • The braneworld is a theory in which the four space-time dimensions of the universe that are apparent make up a surface, called the brane , in a higher-dimensional space-time, called the bulk . One of the appealing features of the brane world is that it can explain why gravity is much weaker than the other forces, with the nongravitational forces being localized to the brane and the gravitational force not limited to the brane. • • In fact, the idea of brane world allows you to consider the possibility of escaping our universe and traveling to a different universe on another brane! • • Ever since the inception of string theory, one of the major conceptual hurdles has been the addition of extra dimensions. With the introduction of all of these new objects, string theorists have begun exploring what they mean. One major step is the introductio...

The "Systems of the universe" ( universe rule, theory)

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  Hi, I'm back with another theory, I'll not make you read a whole new "presentation" paragraph, so let's get right into it. (don't forget, if you like this one, check the other ones, too!) •  Did you ever think about our life, our family and friend groups in a bigger plan ? Like some sort of system , in which every member of a group is like a dot and, to function properly, those dots have to be connected to each other through some sort of line, let's say it has arrows that are directed to one of the dots(that represents the role, and the role is took by the person that has the arrow directed at them ). Let's think of it from the family perspective, let's say. Let's get a smaller one, like the parents and the children. Each one has a role, right? Parents are parents and children are children, parents sustain the children however they can, and children try to make everything alright for the parents, too, not for just them, right? Let's take ...

THE BALANCE OF THE UNIVERSE

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 Hi, I'm back and, as I promised, we'll start with the theories today! So, let's get right into it, shall we? Ever heard of a somewhat balance of the universe? If not, let me explain what I mean by it. Didn't you, at some time in life, felt like everything was going great, and then, poof , everything started going down? Eh, this is the thing I want to talk about today, think as hard as you can and you will find relevance in this "theory". I believe there needs to be a balance in everyone's life , and not only at the minimal plan(us people) but also in the major one, in the universe itself . Life can't be always "good", there needs to be something that comes up and makes the "good" things equalize themselves with the "bad" ones, there it is, the universe at its finest, as I call it, you may call it God , anyway, there is something there that, maybe we don't understand "it" , but this "it" knows wh...