"physical is too hard, it's all a formula." that's the most i've heard in my office。
They're actually the opposite of one thing: physical difficulties, not because there's too many formulas, but because they don't know what physics is working on。
To put it simply, physics is based on mathematical language, which sums up the patterns of natural phenomena and uses them to explain the disciplines of other natural phenomena。
There are three keywords in it: mathematical language, natural phenomena, interpretation of patterns. We'll analyze it in turn
Physics leaves math and can't walk。
That's not a bluff. The math in physics is much more than a multiplier. Images, functions, ratio relationships, equations, limit ideas, geometry, logical chains - all mathematical tools。
A lot of students make cards, they don't figure out, they think they can't do math. In fact, it's mostly physical. The equation is wrong. The math is wrong。
But don't panic about the math base. There are only a few mathematical tools commonly used in high school physics, and they're good enough. The key is to remember that math is physical expression, and physical scenarios and relationships are the inner core。
Physics comes from natural phenomena, not just from definition。
Many students come up to define, write formulas, and write concepts when they have electric fields, power, power. And the more you learn, the more abstract you feel, the less you feel。
Try something different。
Ask yourself: why did humans invent the word “power field strength”? Because it needs to describe “how hard the same charge is in different places”。
Let's figure out what it's going to solve and come back to its definition and formula. The concept is a tool to explain the phenomenon — a tool that is used, not carried back。
The phenomenon is understood before the concept is understood and the definition and formula are finally recorded. That's how physics works。
The ultimate goal of physics is to be “used”。
The science of physics is not about familiarizing itself with a concept. The real goal is two words: output。
What do you mean, output? Give you a question you have never seen, a situation you have never met, and you can analyze it with the knowledge you have, break it down, and solve it。
A lot of physics seems to be very different, actually a couple of underlying models. You need the ability to train, to strip out familiar physical processes from complex subjects。
The subject of physics has three lower-level characteristics, and learning is right。
First, there are relatively few things to remember。
Of course, physics also has to record formulas, concepts, conditions of application. But compared to biology, chemistry, history, it's not really a back-scoring major。
Low backs mean that the examination is more sensitive to understanding, migration and use. And that's why physics is easy to divide — people who do, people who don't。
Secondly, the ability to apply knowledge is extremely tested。
The physics does not tell you which formula to use. It gives you a sports scene, an experimental device, a chart, a statement. Your own judgment: what is the question, what models are involved, which conditions are valid, which formulas should be used, who is the subject of the study, and how many parts of the physical process are divided。
Physical learning cannot be a piecemeal subject, but knowledge networks must be built. In particular, mechanics, which spans almost all of high school physics — electromagnetics, thermals, experiments — are learning hard。
Thirdly, logic leads as closely as chains。
The stress analysis was wrong, the equation behind it was wrong. The exercise was wrong and the formula was wrong. The subject was wrong, and the kinetic energy relationship was a mess。
The physics issue is a chain that is chained. Each step has to be naturally extrapolated from the previous step. What they really want to train is to be based on basic concepts, based on clear physical analysis and one step at a time。
Put these three characteristics in mind, and there's a direction for physical learning. Let's not lose sight of the formula — starting with an understanding of what it is to explain。
Feels useful, says a few words, and forwards them to those who are being physically tortured。
