Please provide a rating, it takes seconds and helps us to keep this resource free for all to use
Welcome to our Physics lesson on The Temperature of the Universe and Unification of Forces, this is the third lesson of our suite of physics lessons covering the topic of Big Bang Model and Temperature, you can find links to the other lessons within this tutorial and access additional physics learning resources below this lesson.
In previous Physics tutorials, we have seen that all forces acting in nature produced by the various types of interaction are grouped into 4 major categories: gravitational, electromagnetic, strong and weak. All specifics related to each category have been explained in tutorial 21.3.
For a long time scientists have tried to unify all four types of forces present in nature. Let's recall a couple of examples to make this point clearer.
Prior to Newton, the force produced during the free fall and that of interaction between the Earth and the Moon were considered of different types. Newton explained that these two forces are basically the same thing. He did this through its theory of general gravitation. The only difference is that the same law is applied in different contexts; objects involved have different masses, different initial velocities, etc. Through his theory of general gravitation, Newton unified the phenomena belonging to gravitational interaction.
Another example: until the end of 19th century, electric and magnetic interaction were considered completely different things. However, Maxwell through his famous system of equations explained in Section 16, established a perfect symmetry in which both these interactions are components of electromagnetic interaction. This symmetry breaks only in specific cases and in very special experiments, where one of the effects can be much more evident than the other so that one of them can be neglected. Therefore, Maxwell unified all phenomena belonging to electromagnetic interaction in a single theory.
You have reached the end of Physics lesson 22.10.3 The Temperature of the Universe and Unification of Forces. There are 6 lessons in this physics tutorial covering Big Bang Model and Temperature, you can access all the lessons from this tutorial below.
Enjoy the "The Temperature of the Universe and Unification of Forces" physics lesson? People who liked the "Big Bang Model and Temperature lesson found the following resources useful:
Please provide a rating, it takes seconds and helps us to keep this resource free for all to use
We hope you found this Physics lesson "Big Bang Model and Temperature" useful. If you did it would be great if you could spare the time to rate this physics lesson (simply click on the number of stars that match your assessment of this physics learning aide) and/or share on social media, this helps us identify popular tutorials and calculators and expand our free learning resources to support our users around the world have free access to expand their knowledge of physics and other disciplines.