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( Sound)
Sound is vibration transmitted through a solid, liquid, or gas; particularly, sound means those vibrations composed of frequencies capable of being detected by ears.[1] For humans, hearing is limited to frequencies between about 20 Hz and 20,000 Hz (20 kHz), with the upper limit generally decreasing with age. Other species have a different range of hearing. For example, dogs can perceive vibrations higher than 20 kHz. As a signal perceived by one of the major senses, sound is used by many species for detecting danger, navigation, predation, and communication. Earth's atmosphere, water, and virtually any physical phenomenon, such as fire, rain, wind, surf, or earthquake, produces (and is characterized by) its unique sounds. Many species, such as frogs, birds, marine and terrestrial mammals, have also developed special organs to produce sound. In some species, these have evolved to produce song and speech. Furthermore, humans have developed culture and technology (such as music, telephone and radio) that allows them to generate, record, transmit, and broadcast sound. The mechanical vibrations that can be interpreted as sound are able to travel through all forms of matter gases, liquids, solids, and plasmas. The matter that supports the sound is called the medium. Sound cannot travel through vacuum. Sound is transmitted through gases, plasma, and liquids as longitudinal waves, also called compression waves. Through solids, however, it can be transmitted as both longitudinal and transverse waves. Longitudinal sound waves are waves of alternating pressure deviations from the equilibrium pressure, causing local regions of compression and rarefaction, while transverse waves in solids, are waves of alternating shear stress.
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Sound Subcategories
Sound Articles
Benefits of Exercise by jaffar aashik
Just put on your exercising gear and make your wish come true. For overall health any form of physical activity or exercise is very important. Exercising has manifold benefits both physical as well as mental. Half an hour of exercising everyday can g...
Strength Training & Yoga by jaffar aashik
You can improve your appearance, strength muscle to fat ratio, and even your walking performance by adding strength training to your walking routine. Some benefits of strength training ...
Body Fitness & Strength by jaffar aashik
You may think fitness means going to the gym everyday after school. However, there are many different forms of physical fitness. It's not important what you do to stay fit, it's important that you do it regularly. If you are physically fit, you are f...
Strength Training & Yoga by kannan kannan
You can improve your appearance, strength muscle to fat ratio, and even your walking performance by adding strength training to your walking routine. Some benefits of strength training ...
Body Fitness & Strength by kannan kannan
You may think fitness means going to the gym everyday after school. However, there are many different forms of physical fitness. It's not important what you do to stay fit, it's important that you do it regularly. If you are physically fit, you are...
Benefits of Exercise by Prabakar S
Just put on your exercising gear and make your wish come true. For overall health any form of physical activity or exercise is very important. Exercising has manifold benefits both physical as well as mental. Half an hour of exercising everyday can g...
Soundbody Basic training exercise programs by jeya lakshmi
Soundbody has provided you with a basic training program that most anyone can use to get into a routine of working out. The basic training is easy to use and readily available in man...
Gaining strength and building muscle weightlifting Strength training by jeya lakshmi
Strength Training is any exercise that causes you to build lean muscle mass. This can be accomplished best with moderate weight lifting. While there is a definite correlation between gaining strength and building muscle, you can tailor your weight tr...
Weight Loss Exercise Programs by Prabakar S
When designing their weight loss exercise programs, people want to know the best exercise for weight loss. Surprisingly, the exercise that burns the most calories is not always the best exercise for weight loss. Sure, it’s important to burn calories,...
Overall Fitness Exercises by Prabakar S
Your exercise program should include something from each of the four basic fitness components described previously. Each workout should begin with a warmup and end with a cooldown. As a general rule, space your workouts throughout the week and avoid ...
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