Tips for studying physics

Tips for studying physics
How to Study: Tips for Physics students1
Learning Physics
Acquiring proficiency in physics involves each of the following:
(a) Complete familiarity with the fundamental concepts that constitute the real
basis of the subject: come to lectures and take notes.
(b) Reading of detailed textbooks which provide the thorough explanations
necessary for a proper understanding, and which described experimental work in
some detail.
(c) Ability to apply the basis laws and principles to both familiar and unfamiliar
problems, an ability that is developed by constant practice (i.e. homework).
(d) A laboratory course of practical work.
(e) Talk with your T.A.’s and your professors. It’s very hard for professors to
mark down someone they know!
(f) Unless instructed otherwise, you can and should discuss general methods for
tackling homework problems with your peers, but the solutions you hand in must
be your own. (See the separate guidelines “How Not to Plagarize”.)
Revision
Well before the exam draw up a written timetable, and keep to it.
(1) Set aside for each day a definite length of time.
(2) Find a place where you will not be distracted (i.e. not in front of the TV or
computer).
(3) Have a pencil and paper to hand
(4) Choose a particular topic to revise, and then devote all of your attention to
that topic.
(5) Pay particular attention to diagrams and their labels
(6) Repeat to yourself the full meaning of a graph (e.g. emphasize which is the
dependent, and which is the independent variable, and whether some other
quantity is by implication held constant).
(7) When you think that a topic is mastered, test yourself by re-writing the main
ideas, as though explaining them to someone who has no previous knowledge of
that topic.
Revision should be very much an active (not a passive) occupation.
1
Adapted from Essential Principles of Physics by P. M. Whelan and M. J.
Hodgson (John Murray, London, 1978).
Examination Technique
An examination is an exercise in efficient communication, and therefore also
requires planning.
(1) Read the Instructions at the top of the paper very carefully to see exactly what
you have to do.
(2) Read ALL the questions CAREFULLY at the start of the exam. This allows
you to select the easiest question to answer first (you do NOT have to answer
questions in the order they appear in the exam paper); also, it allows your
subconscious mind to mull over the harder questions while you are writing the
answers to the easier ones (which is impossible if you only give them a cursory
inspection rather than a careful read-through).
(3) Time Discipline calculate how much time can be spent on each question, and
do not exceed it. Resist the temptation to spend more time to finish one tough
question: it is a far better to move on and start racking up points on a new
question, and you can always come back to finish a partially completed question
later. If you run short of time, make your answer shorter, but make sure it
includes the fundamentals.
(4) Read the Question that you are answering carefully to see exactly what is
required. Do not spend time giving details you are not asked for, and do not
repeat yourself. Work out the order in which different parts of the question are
best answered: it is usually better to tackle a numerical or algebraic problem
before a lengthy description.
(5) Diagrams: Illustrate your answer with very large clearly labeled diagrams and
graphs whenever you can. A quick sketch rather than paragraphs of description
can convey far more information. If you are asked to do a scale drawing, draw it
as accurately and as large as the paper will allow. State your scale.
(6) Procedure for quantitative problems (i.e. where calculations are required):
(i) Read the question carefully to see what has to be calculated.
(ii) Summarize the information given in the question, making the units explicitly
clear. Often, this can most conveniently be done using a diagram.
(iii) State clearly the principle of physics on which your approach depends.
Often an equation is enough.
(iv) Do the numerical computation in such a way that the marker can spot a
error: you will usually get partial credit for a problem in which you take the
correct physical approach but made a small slip in math, provided the marker
can tell that is what happened. State answers using the appropriate units.
(v) State your answer with a complete sentence, and make sure it is of sensible
order of magnitude. If you think that it is not, then say so.
(7) When describing experiments, list events in the order in which they happen.
Illustrate by symbols the measurements to be taken, and demonstrate how the
result is to be calculated.
(8) Good English and legible handwriting are essential: without them you cannot
communicate.
However good your examination technique, there is no substitute for knowing
your subject.
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