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Sep 1, 2014 · Simple Relativity is a 2D short educational animation film. The film is an attempt to explain Albert Einstein’s Special Theory of Relativity with a simpler v...
- 6 min
- 5M
- Vinit Masram
In a way gravity and acceleration were different ways to describe the same thing. The way to connect gravity in the theory of relativity was through the idea of acceleration, and this became...
- 14 min
- 6M
- Arvin Ash
Sep 16, 2015 · Our series "A Moment of Science with Brian Greene" starts up with a brief visual explanation of the difference between Special Relativity and General Relativity.
- 3 min
- 114.4K
- World Science Festival
In this video, we introduce the field of economics using quotes from the person that many consider to be the "father" of economics: Adam Smith. Topics include the definition of economics, microeconomics, and macroeconomics as a field and the role of assumptions in economic decisionmaking.
- 10 min
- Sal Khan
- A lot of economists seems to use models that aim to predict people's behaviors logically based purely on things like price, interests rates, etc wi...
- Microeconomics concerns individual consumers, markets and goods etc. Macroeconomics is about the economy in the big picture, the aggregate of all c...
- I think that people that hoard things are very hurtful and harmful to them selves because they do not understand that they are hurting their loved...
- Unfortunately, there are many instances in which common sense has lost out to mathematical rigor in economics. An old joke is a quote from economis...
- To me, demand is how much a product is desire. For example, video game producers try to increase demand of an upcoming title by releasing trailers,...
- An adverse balance of trade refers to a situation in which the value of a country's imports is greater than its exports.
- oh no, critical reading. It feels as if the invisible hand guiding each enterprising individual is the demand of the consumers. Companies have to c...
- Since there are multiple questions here, I'll try to simplify my POV. Economics helps us understand individual behaviours (to an extent), and event...
- "Freakonomics" by Steven D. Levitt and Stephen J. Dubner "The Wealth of Nations" by Adam Smith "Capital in the Twenty-First Century" by Thomas Pike...
- Microeconomics is the study of the choices that firms and individuals make to allocate scarce resources
- Intuition and Key Concepts Behind Special Relativity
- The Concept of Spacetime: What Is It?
- Lorentz Transformations and Lorentz Invariance
- Four-Vectors: The Mathematical Language of Special Relativity
- Relativistic Laws of Motion
To get started, we need to take a look at what the logic and principles behind special relativity actually is. Now, special relativity is practically based on two principles known as the postulates of special relativity. These postulates are as follows: 1. The laws of physics must be the same in all inertial reference frames (this is also the case ...
To keep the speed of light constant in all inertial frames, we’ll quickly run into problems, such as the addition of velocities, which we won’t get into the semantics of. The point here is that what we call ordinary Galilean relativity (i.e. transforming and comparing reference frames according to ordinary Newtonian physics), can not be quite corre...
Up to this point, I’ve mentioned the concept of invariancequite a bit, but not actually explained or defined it in detail. That’s what we’re going to do next. The goal is to essentially be able to compare measured quantities in different reference frames, meaning to transform from one frame to another and if a quantity remains the same after this t...
Before we get started on any of the relativistic dynamics, we have to go over the concept of a 4-vector. Simply put, a 4-vector is a vector with four components (in relativity, it could be t, x, y and z), which means that it is a 4-dimensional vector. If we compare this to a regular 3-dimensional vector in Newtonian physics (which may have componen...
Now, special relativity isn’t fundamentally about time dilation, length contraction, twin paradoxes or any of the weird phenomena associated with it, like it is sometimes presented. It is rather about redefining the fundamental laws of physics in terms of quantities that transform according to Lorentz transformations (i.e. the speed of light is kep...
Jul 31, 2024 · Relativity, wide-ranging physical theories formed by the German-born physicist Albert Einstein. Special relativity is limited to objects that are moving with respect to inertial frames of reference. General relativity is concerned with gravity, one of the fundamental forces in the universe.
People also ask
What is the difference between special relativity and general relativity?
What is special relativity?
What is simple relativity?
Who invented special relativity?
5 days ago · Special relativity is limited to objects that are moving with respect to inertial frames of reference—i.e., in a state of uniform motion with respect to one another such that one cannot, by purely mechanical experiments, distinguish one from the other.
