A phase is a word that has several meanings

What is the phase? This word has several meanings. It is used in various fields of human activity. The concept is often mentioned in astrology, physics and even medicine. Consider its general meaning, and then a more narrow understanding in different areas.

The phase is ...

The word has a Greek origin and means "appearance." In a general sense, the phase is a certain moment in the developing process of something. In physics, the phase of oscillations (alternating current, harmonic oscillation) is known.

The explanatory dictionary of Ephraim reveals this concept as a stage or stage in something; Or a value that reveals the state of the process at some point. In chemistry, the phase is a homogeneous part of an inhomogeneous system, and in electrical engineering - a separate winding of the generator along with the wire to it.

Moon and phase

The natural companion of our Earth is the Moon. Even the ancients noticed that at different times it has a different effect on people. It can be connected with the state of health and even the events in their life.

Today we are talking about a cycle divided into four parts, which are the phases of the moon in astrology. It lasts seven to eight days. When there is a transition from the 4th to the 1st, and also from the 2nd to the 3rd, there are two climaxes: the full moon and the new moon. At such times, the mood changes most often and changes in life occur. People are more susceptible. In the transition points, when the phase of the moon in astrology is replaced by one another, it is recommended that these days should be given special attention to oneself and to others.

The growing moon can feel the activity and enthusiasm, and the slowing down - slow reactions and reduced activity.

The phases of the day have something in common with the lunar calendar, if we consider the different influence of the light on man. This can be felt both on the physical level and on the energy level. Therefore, astrologers advise taking this into account in their plans and actions in order to achieve the best results in life.

Earthing

Probably everyone has heard such a phrase as the phase in electricity. But this is what is known, not everyone knows. From the course of physics we know that the current is constant and variable. It is not difficult to guess that the phase can only refer to an alternating current.

When one of the terminals is grounded, the voltage remains on only one wire, where it will vary with respect to ground. It was called the phase. If you touch it, then the electrical circuit is formed between the person and the earth. Naturally, this is life-threatening, therefore it is very important to be able to determine the phase.

Methods for determining the phase

It is easiest to use a probe for this purpose. Nowadays it costs a penny. He looks like an ordinary screwdriver, but transparent, with a neon bulb inside.

To determine the phase, simply touch the wire, but the finger must at this time be attached to the top of the indicator. An electrical circuit is created between the ground and the phase, but the person does not suffer, because there is a limiting resistor inside the device. When the phase is touched, the neon light is on.

A more serious device is a multimeter. It's also very easy to work with him. The necessary mode is switched on, one finger touches one probe, and the other - wires. The phase in electricity will be determined on the display of the device.

But the most interesting way is to determine the phase with a conventional light bulb. Additionally, a cartridge and two wires are required. One wire is grounded (in an apartment building it can be done with a central heating battery), while others need to touch the wire. If the light is lit, then this will indicate the presence of the phase.

Three-phase or single-phase current

Without going into technical details, it is possible to designate a three-phase network as a method of transferring electric current, in which an alternating current passes with three wires, and one is returned.

We know that any electrical network consists of two wires, one of which goes to the device (for example, a lamp), and on the other - it returns. By breaking it, we find that the current will not go. This is a single-phase circuit. By phase conductor (as it is called phase) it goes, and by zero - it returns.

Three-phase circuit includes three wires "there" and one - "back". The effect is achieved due to the fact that in each of the wires the phase is shifted relative to the adjacent row by 120 degrees.

Alternating current is transmitted through three networks. It is divided into phases, approaching the consumer, and each is given a zero. Thus, the current comes into the house.

About security

Grounding certainly does work with electricity safe. This can be seen in a simple example. If a breakdown occurs in the washing machine, some of the current will come out to the outer metal shell. In the absence of grounding, the charge will "walk" through the machine, and if accidentally touched, it will easily come out through a person who gets an electric shock.

However, if there is grounding, the extra charge simply flows down this wire, and the harm to the person will not be caused. It is clear that in those homes where grounding is not initially provided, electricity can be unsafe.

To fix the situation, it is not necessary to change all the wiring. But irresponsible to the procedure also should not be treated. After all, this is a risk to life. Therefore, this issue should be addressed to professionals.

So, the meaning of the word "phase" is manifold, but, based on the general understanding of the term, it becomes easier to understand a narrower sense in its application.