# EwHows.com

### What is efficiency ?

coefficient of performance (COP) - a term that can be applied, perhaps to every system and device.Even a person has the efficiency, however, probably does not yet exist an objective formula for its location.This article will tell in detail what is efficiency and how it can be calculated f...

### What is cavitation ?

Recently, use of the term "cavitation" is gaining momentum.This is due to the fact that it was used for cosmetic purposes. But that means the concept and where it is still used, describe in this article. Cavitation in various sectors cavitation concept is used in several industries: ...

### What is an ion ?

Not many people are well versed in a variety of terms, theories and laws of physics and chemistry.And some may be just beginning to study these disciplines.Therefore, certain terms may be unknown or forgotten.For example, the word "ion" is familiar to so many people, however, let us remem...

### What is inertia ?

word "inertia" we associate with physics, but we often use it in everyday life regardless of this science.Let's see, what is inertia. meaning of This word comes to us from Latin: inertia.Inertia means "inaction". Inertia - a property of the body to maintain the original state of rest ...

### What is induction ?

Let's reveal the essence of the concept of "induction" in its different senses, and give examples.Particular attention is paid within the meaning of induction in physics.So, what is induction?Induction concept applies not only to the physical quantity.Let us consider the induction in phys...

### What is radiation?

For those who are not familiar with physics, or just starting to learn it, the question of what radiation is complex.But with the physical phenomenon we encounter almost every day.Simply put, the radiation - a process of propagation of energy in the form of electromagnetic waves or partic...

### What is diffusion ?

Diffusion is translated from Latin as distribution or interaction.Diffusion is a very important concept of physics.The essence of the diffusion is some penetration into other molecular substances.In the process of mixing the leveling of both concentrations by volume occupied by them.The s...

### What is gravity ?

word "gravity" came to us from the Latin language, it literally means "heaviness."Even if you do not know what gravity is, rest assured that you will encounter this phenomenon every day, even now. try to understand this term. Meaning of gravity, or as it is called attraction or gravit...

### What is the current ?

Volt - unit, card trick, reception swordsman, magic wax doll ....In general, the word has a lot of meanings.Let's look more to what is current in each of these values. Volt as the unit Volt - a unit of measurement contained in the International System of Units.Officially introduced in ...

### What is a vacuum?

vacuum - a concept widely used in physics and engineering.This word comes from the Latin vacuus, which means "empty".This sense of the word "vacuum" is stored in a general sense the vacuum space is free of substances.In physics and engineering sciences is considered vacuum environment in ...