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Years ago, people thought the Sun revolved around the Earth. Galileo first and then Copernicus found out that the event was just the opposite. Earth, along with other planets, revolves around the Sun. Have you ever wondered why people thought so? Have you not wondered the same when you were a kid? The challenge against this simplified thought is Einstein’s first step in the theory of relativity. This is an elementary yet decisive theory that is one of the foundational concepts of the Earth. Let us know the basics of the idea of relativity. Then, we will delve deeper into it with explicit examples that everyone can understand.
The theory of relativity by Albert Einstein states that space and time are relative, and all motions must be close to a frame of reference. According to this notion, the laws of physics are the same everywhere.
Two fundamental concepts of Einstein’s theory of relativity are:
Two theories are connected to relativity theory: Special Relativity Theory and General Relativity Theory.
Let us have a break here before delving deeper into these two theories. Some easy examples can ease your confusion about the theory of relativity.
Both of you are right. Do you know how? Focus again…
You and Nehal are right here because you exist in two states. We will understand the theory in a more simplified way. Before that, we will know what a particular relative theory is.
In 1905, the theory of special relativity was first introduced by Einstein. This theorem deals with the structure of space-time. Einstein explained the idea based on two postulates –
Thus, the concept of time travel came from Albert Einstein’s theory of relativity. He also added that the time tics decrease with the increase of the person’s velocity. But, this phenomenon is hard to notice as the decrease in time is relatively very low compared to the rise in time. You can make time stand still by increasing the velocity of light, known as time dilation. Other surprising consequences of this theory are:
Objects appear shorter in the direction they are moving concerning the observer.
Two actions, simultaneous for one person, may not be simultaneous for another person in relative motion.
Scientists have observed over the years that the object’s mass increases with the velocity but never knew how to calculate it. This theory offered the solution to their problem that explains that the increased relativistic weight of the object is equal to the kinetic energy divided by the square of the speed of light. Thus, the study of relativity led to the invention of a grand theory, E=mc², where E is energy, m is mass, and c defines the velocity of light.
Around 1907-15, Einstein developed the general theory of relativity. States that being at rest in the gravitational field and accelerating are physically identical. An observer sees the ball fall similarly on the rocket and Earth. Rocket’s acceleration equals 9.8 m/s2, which makes it possible. Newton’s special relativity and gravitational theory are related to this theory. Some consequences of special relativity are:
Your school does not teach physics to bore you. If you focus a little, you will see how everything abides by the physics’ rules. Our daily life events are deeply intertwined with the laws of physics. Let us find some of them:
The deeper you go, the more you realise that this Earth is about the theory of relativity. Einstein paved a long path for scientists to come in the future. If they work on the theory more, the mystery of this universe will soon be revealed.
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