Sound phenomena in animate and inanimate nature: examples

Many people want to find answers to questions about what sound phenomena are, and where they come from. By what principle do some sounds differ from others? Why do we hear them?

Today we look at the section of physics that studies sound phenomena. This section is called acoustics.

Vibration is the cause of all sounds on the planet

If we hear some kind of noise, then we can mentallysubmit this source, which publishes it. So, if we look at it, there we will see what is vibrating. When we talk, the vocal cords vibrate inside our body. Thus, we hear our own voice. Examples of sound phenomena in physics we observe and hear every day.

Historical reference

Physics studies sound phenomena from the oldesttimes. Our eternal companions in life are noises and sounds. There are noise fluctuations to us pleasant, while others irritate us. With these words, it can be concluded that sounds and sound phenomena affect the consciousness and well-being of a person in different ways. It is known that from some noise a person can go crazy, but there are such sounds that can cure any ailment in a person. All these discoveries were made by man even before our era. A little later you will find out what sound phenomena are. In the meantime, let's talk about discoveries in the field of acoustics.

Ancient civilizations

Amazing healing effect of sound onthe person was noticed by the clergy of the temples of Ancient Egypt. Naturally, they used this phenomenon for religious purposes. Now the ritual feasts of the Egyptians were not without choruses and chants. A little later, music and sounds broke into the temples of Christians. The highest level of musical skill was first taken over by the Indians. Back in those distant times, they created and actively used musical notation. The Indians gave each note a certain meaning. The last note of the scale "Ne" denoted sadness, the note "Pa" denoted joy.

Pythagoras - the father of acoustics

Since ancient times, people havesound phenomena. For example, the ancient Greek scholar mathematician and philosopher Pythagoras, who lived about 2,500 years ago, conducted various experiments with sounds. Thanks to his discoveries, he proved that the low tone of instruments is inherent only in those that have long strings. When the string is shortened in half, then the sound rises by one octave. Thanks to these conclusions, Pythagoras was initiated in the section of physics - acoustics. The very first acoustic devices were created by the Greeks, who lived in the era of antiquity. They used them in theaters. These instruments were in the form of small mouthpieces, which the actors inserted into their mask in order to amplify the sound. By the way, it was very interesting phenomenon whispering statues of the gods in ancient Egypt.

Revival and New Time

For many centuries, sound phenomena andcontinued to study. For example, even the painter Leonardo da Vinci was engaged in acoustics. In his writings he formulated the principle of the independence of sound waves from various sources. After 400 years in France in the Paris Academy of Sciences, Joseph Saver published "Memoirs on Acoustics." Then Newton studied the works of Saver. Based on his conclusions and conclusions, he developed a calculation of the length of the sound wave. Newton came to the conclusion that the length of the sound wave is twice that of the tube that reproduces this sound.

Definition of sound

What concerns sound phenomena? We now turn to the definition of the term "sound". These are mechanical vibrations that propagate in elastic media, such as: gas, liquids and solids. Such mechanical vibrations perceive the organs of hearing, that is our ears. The simplest example, which explains the essence of sound, will be the string of any musical instrument. It transfers vibrations to the surrounding particles of air. Oscillations spread far away, and when they reach the ear, they cause oscillation of the tympanic membrane. So we hear the sound differently.

Sound phenomena in nature

Sound waves can not be seen. However, you can imagine how they will look. To do this, you need to go to any pond. If you throw a stone in a lake or pond, at first you will see a depression. Then the water will rise, and as a result of this, waves appear on the surface of the reservoir, representing alternately alternating depressions and crests. They will be distributed in all directions.

Sections in acoustics

The issues of origin and spread, andalso the absorption of sound is engaged in acoustics. Over the past 10 years, physical acoustics have discovered sounds that are beyond hearing. They are studied by ultra-acoustics. Technical acoustics deals with the processes of receiving, transmitting and recording methods using electrical appliances. The next section, studying the propagation of sound in the room - architectural acoustics. For it, not only the dimensions and shapes of the room where the sound is studied are important, but also the materials that cover the walls and ceilings of the room. Musical acoustics studies the nature and origin of musical sounds. Along with other sections, there is also marine acoustics (hydroacoustics). It is designed to study sound phenomena in an aquatic environment. Hydroacoustics is necessary for the development, as well as the creation of sound devices that can be used on submarines. There is one more kind - atmospheric acoustics. She studies sound phenomena in the atmosphere. Physiological acoustics is guarded by the organs of hearing. Thanks to it, we know the capabilities of our bodies, their arrangement and action. This kind of acoustics studies the formation of the sounds of the organs of speech. And the last kind is biological acoustics. She considers questions of ultrasound and sound communication of animals. She also studies the mechanisms of location used by animals, in addition, biological acoustics is designed to investigate the problems of noise and vibration, it is necessary in order to combat harmful noises and to improve the environment.

Abnormal natural sound phenomena

On our planet there are places known forthe phenomenon of hum. It is described as a constant and low-frequency buzz. The source of this sound has not yet been detected. The city of Talas in New Mexico has such an anomalous source of sound. Surprisingly, only 2% of the local residents hear this buzz, they say that the sound is extremely disturbing.

Abnormal natural sound phenomena

One of the most pleasant sounds a person thinkspurring cats. Scientists are still studying this phenomenon. The origin of this sound has not yet been established. No less surprising in nature are considered very complex and long sounds that are produced by males of humpback whales. Many scientists believed that this is necessary to attract females, but recent research has proved that sound does not attract females, but males.

In nature, there is a huge amount of sounds. We hear thunder. In winter, snow crunches under our feet. If you scream in the forest, we'll hear an echo. It is also an example of sound phenomena in nature.

Thus, we considered examples of sound phenomena in physics and nature. Now not a single test work is terrible for you.