HOW TO LEARN PHYSICS?
Very often student ask, “How should I study physics and prepare for Exams?” There is no simple answer to this question, but I would like to offer some suggestions based on my experiences in learning and teaching.
First and foremost, maintain a positive attitude towards the subject matter, keeping in mind that PHYSICS is the most fundamental of all natural sciences. Other science courses that follow will use the same physical principles, so it is important that you understand and be able to apply the various concepts and theories.
CONCEPTS AND PRINCIPLES
It is essential that you understand basic concepts and principles before attempting to solve assigned problems. This is best accomplished through a careful reading of the text material before attending your lecture on that subject. In the process, it is useful to note down certain points that are not clear to you. Take careful notes in class, and then ask questions relating to those ideas that require clarification. Keep in mind that few people are able to absorb the full meaning of scientific material after one reading. Several readings of the Text Book(s) and Notes may be necessary. You should reduce memorization of material to a minimum. Memorizing passages from a text, equations, and derivations does not necessarily mean you understand the material. Your understanding of the material will be enhanced through a combination of efficient study habits discussion with other students and instructor, and your ability to solve the problems. Ask questions whenever you feel it is necessary & initiate discussion with you classmates. Many individuals are able to speed-up the learning process when the subject is discussed on one-to-one basis.
STUDY SCHEDULE
It is important to set up a regular study schedule, preferably on a daily basis. Make sure to read the syllabus for the course and adhere to the schedule set by you or by your instructor. The lectures will be much more meaningful if you read the corresponding textual material before attending the lecture. As a general rule you should devote about two hours of study time for every hour in class. If you are having trouble with the course, seek the advice of the instructor or students who have already taken the course. You may find it necessary to seek further instructions from experienced students. Very often, instructors offer review sessions in addition to regular class periods. It is important that you avoid the practice of delaying study until a day or two before an exam. More often than not, this will lead to disastrous results. Rather than an all night study session before an exam, it is better to briefly review the basic concepts and equations, followed by good-night’s rest.
PROBLEM SOLVING
R.P. Feynman, Noble laureate PHYSICS, once said, “You do not know anything until you have practiced.” In keeping with this statement, I strongly advise that you develop the skills necessary to solve a wide range of problems. Your ability to solve problems will be one of the main tests of your knowledge of PHYSICS, and therefore, you should try to solve as many problems as possible. It is essential that you understand basic concepts and principles before attempting to solve problems. It is good practice to try to find alternate solutions to the same problem. For example, problems in Mechanics can be solved using Newton’s Laws but very often an alternative method using Energy considerations is more direct. You should not deceive yourself into thinking you understand the problem after seeing its solution in class. You must be able to solve the problem and similar problems on your own.
The method of solving problems should be carefully planned. A systematic plan is especially important when a problem involves several concepts. First, read the problem several times until you are confident you understand what is being asked. Look for any key words that will help you interpret the problem, and perhaps allow you to make certain assumptions. Your ability to interpret the question properly is an integral part of problem solving. You should acquire the habit of writing down the information given in a problem, and decide what quantities need to be found. You might want to construct a table listing quantities given, and quantities to be found. After you have decided on the method you feel is appropriate for the situation, proceed with your solutions.
I often find that students fail to recognize the limitations of certain formulas or physical laws in a particular situation. It is very important that you understand and remember the assumptions underlying a particular theory.
CLOSING COMMENT
Someone once said that there are only two professions in which people truly enjoy what they are doing: PROFESSIONAL SPORTS AND PHYSICS. Although this statement is mot likely an exaggeration both professions are truly exciting and stretch your skills to the limit. It is my sincere hope that you too will find PHYSICS exciting and that you will get benefit from this experience, regardless of your chosen profession.
WELCOME TO THE EXCITING WORLD OF
PHYSICS