Welcome to another issue of Physics Tips Daily - the free eZine to provide tips and tricks for students to survive and excel in physics.
Today's topic is about the six commonly used physics principles.
The science of physics describes how the universe works. Although its study can be very complicated, it can be summarized in a few fundamental principles.
Principle #1: Force - This principle is often summed up by the contributions of Newton. His laws of motion and gravitation are a great explanation of the importance of force, mass, acceleration and gravity.
Principle #2: Equilibrium -Many times force balance out and have no net effect. This is called equilibrium. It can be applied to static or dynamic situations. This could be a skydiver falling at terminal velocity, or a mobile that is perfectly balanced.
Principle #3: Motion -Many introductory physics classes emphasize mechanics and motion very heavily. Often, it is at the exclusion of other equally interesting areas of physics. However, the study of motion does apply to and describe a great deal of things in our everyday life. We can describe the velocity and acceleration of an object, or predict the time of some particular trip or movement.
Principle #4: Conservation -In physics, many quantities are conserved. Mass, energy, momentum, and charge to name a few. For each of these there are situations where the application of conservation can be used to solve problems and predict results. The famous result E=mc2 is a good example of conservation of mass and energy combined.
Principle #5: Quantization-This principle is used mostly in quantum and atomic physics. It describes how certain electrons, energy levels, or other quantities must be a certain quantized values. An electron could have an energy of 1, 2, 3, etc. However, it would never have an energy of 1 ¾, this wouldn't be possible. It's analogous to a person on a set of steps. They are either on one step or the next, not in between.
Principle #6: Interference -While mostly applied to waves, the principle of interference is still very important. Interference explain all diffraction effects. This topic is also closely related to the wave/particle duality of light. Interference can also apply to waves that simply add or subtract when combined.
Study these principles and full understand them, which will help you to the physics mastery.
That should do it for today.
Keep it up with your study. "See" you tomorrow.
Meanwhile, Seize the Day!
Wayne Huang, PhD
http://www.RapidLearningCenter.com
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>> Physics Mastery = Core-Concepts + Problem-Solving + Super Review.
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