How Stuff Works explains that sound travels in mechanical waves, and these waves are disturbances that cause energy to move. The energy is then transported through a medium. Disturbances occur when an object vibrates. This vibration is caused by interconnected and interactive particles.Know More
Sound has the ability to travel through gases, liquids and solids. How Stuff Works sates that the speed of any sound wave is highly dependent on the medium through which it travels. The speed of sound is greater when it travels through solids. It travels more slowly when it goes through liquids and gases. This means that the denser the medium through which sound travels, then the slower it passes. This is evidenced by the fact that sound travels faster on a warm day than on a cold day.
The sounds that one hears are created when air particles collide. These air particles pass from the object the sound is coming from into the eardrum, which is also known as the tympanic membrane. This movement of sound waves from the object to one's eardrums is called transmission. How Stuff Works explains that when the air particles collide with the eardrum, vibrations resonate through several different structures in the ear: These vibrations are sent as messages to the brain, where they are interpreted as sound.Learn more about Optics & Waves
When sound waves strike a surface, they reflect off of that surface and can return to the source of the sound as an echo. To a listener, this may be identical to the original sound, just delayed and possibly distorted by its path through the air. If the echo arrives quickly enough, it may seem to be part of the original sound, forming a reverberation instead of an echo.Full Answer >
Radio waves are detected using electrical circuits that receive these electromagnetic signals in an antenna, and then the radio frequencies are modulated through capacitors before emerging as sound in a speaker. Radio waves are normally less than a kilohertz long up to 20 gigahertz. Since humans cannot hear these frequencies, radio signals are often translated into sounds by electrical devices.Full Answer >
An echo is the reflection of sound waves off distant objects, whereas flutter echoes bounce repeatedly off multiple surfaces. An example of an echo is when someone shouts into a well, or along canyon walls, and the sound of the human voice comes back to the person's ears. A flutter echo occurs in large buildings with parallel walls, such as gymnasiums, where sounds increase to create loud environments.Full Answer >
Sound waves are longitudinal waves of sound formed as it occurs. They cannot be seen with the naked eye, but they can be represented on a graph. There, sound waves are displayed as a series of vertical lines.Full Answer >