We all learned in school once such a thing as a physicist.To some it was easy, but someone had to spend on homework a lot of time.Let's try to understand, or to recall what a physicist?What is studying the subject and its role in human development?
Section 1. What is physics?Definition
Actually the word "physics" once derived from the ancient Greek "fyuzis", which translated into modern Russian language now could be interpreted as a "nature" or "environment".
If you look at the history of this science, you can almost immediately get a response, indicating that the definition for the first time appeared in the annals of belonging to Aristotle, which is considered, and continues to be the greatest thinker of antiquity.And when you consider that he lived philosopher and scientist somewhere in the IV.BC, it is possible to guess at what occurred around the time in the world this sphere of knowledge.
How managed to get word to our, Russian language?Perhaps you have heard or read that the world famous scientist Mikhail Lomonosov, except for scientific activities engaged in book publishing and more: some textbooks he wrote himself, and some believed more appropriate to translate.For example, a book on physics, which brought the term in our scientific community, has been translated from German.
Section 2. What is Physics?Here are some examples
In general, physics is one of the basic sciences of nature, and if you carefully look around, we can conclude that it is all around us almost everywhere.Why is that?Because in reality, located around constantly occur certain changes, processes, or, in other words, the phenomenon.
Iesafe to say that the term "physical phenomena in nature" includes all without exception, the changes that occur with substances and bodies in the world around us.
Here are a few examples of how you can trace the action of physical laws at our usual phenomena.Here, for example, we register a piece of ice or a handful of snow in the warm house.What's happening?That's right, he immediately begins to melt.Water supplied to the fire sooner or later, the kettle begins to boil, and the electric current flowing through the wire in the end it heats hot (this phenomenon, we can see the light bulb).So
and ice melting and heating wire, and falling stones from the mountain, and the spring thunder, and an icy wind - all these physical phenomena.
Generally speaking, the physics studies sound, magnetic, mechanical, light, thermal, and electrical phenomena.All of the above can be called physical characteristics, in which all the transformations occurring substances without changing the composition.
Section 3. What is the physics and its relationship with other sciences
Then there is a logical question.How to manage a science to study so many different kinds of processes?The fact is that the subject has one important feature consists in the fact that the general laws, taking into account the most basic factors.
How?
Here is another example.Let's say you have a few balls, they are all different, ie,different from each other and the diameter and density, and weight.What will happen if we start throwing them to the ground at different heights?After several experiments, even the younger student becomes clear that their free-fall will be different.So physics, science, states that all these processes take place according to certain laws, which may well be applied to other objects, the measurement of which is impossible in practice.
With physics once it was established that the various bodies fall to the ground rather than fly into the air by the force of Earth's gravity, the alternation of day and night is due to the fact that the Earth rotates on its axis, the wind is caused by the uneven heating of air masses.
You may ask, what about, say, astronomy, geography, chemistry and biology, because they are also engaged in the study of nature?Yes, they do, but in each of these sciences apply the laws of physics.
Why?Well, for example, in geography, in order to explain the nature of the climate of the river or the occurrence of certain events.In astronomy, modern physics used to study in detail the structure and process of development of the newly discovered celestial bodies, because we are not yet able to go there and explore everything in place, therefore, appropriate to use one or the other law.
