describe the phenomenon of echo all things
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hii here your answer___^___
when we are in a large closed room and make a loud sound we will notice that the sounds get repeated several times gradually getting softer till it dies away this is called and Eco..
thus an Eco can be defined as the sound that is heard by the observer after it is reflected from a rigif surface Eco is a common occurrence in mountains and valleys where the sound from the source strikes the mountain and returns to the source after a certain interval of time.
how echo occur____
☆ the size of the reflector should be large for example a large building or a mountain reflects sound to produce and Eco
☆ the original sound should be very short duration such as a clap so that the Eco does not mix with the original sound.
☆ the distance of the digits surface from the source of sound must be atleast 17 m
hope its help you
@Hero of all us alok
when we are in a large closed room and make a loud sound we will notice that the sounds get repeated several times gradually getting softer till it dies away this is called and Eco..
thus an Eco can be defined as the sound that is heard by the observer after it is reflected from a rigif surface Eco is a common occurrence in mountains and valleys where the sound from the source strikes the mountain and returns to the source after a certain interval of time.
how echo occur____
☆ the size of the reflector should be large for example a large building or a mountain reflects sound to produce and Eco
☆ the original sound should be very short duration such as a clap so that the Eco does not mix with the original sound.
☆ the distance of the digits surface from the source of sound must be atleast 17 m
hope its help you
@Hero of all us alok
ghyssehj:
thank
but can you how echo occur
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the listener with a delay after the direct sound. The delay is proportional to the distance of the reflecting surface from the source and the listener. Typical examples are the echo produced by the bottom of a well, by a building, or by the walls of an enclosed room and an empty room. A true echo is a single reflection of the sound source.[citation needed]
The word echo derives from the Greek ἠχώ (ēchō),[1] itself from ἦχος (ēchos), "sound".[2] Echo in the folk story of Greek is a mountain nymph whose ability to speak was cursed, only able to repeat the last words anyone spoke to her. Some animals use echo for location sensing and navigation, such as cetaceans (dolphins and whales)
Acoustic waves akola are reflected by walls or other hard surfaces, such as mountains and privacy fences. The reason of reflection may be explained as a discontinuity in the propagation medium. This can be heard when the reflection returns with sufficient magnitude and delay to be perceived distinctly. When sound, or the echo itself, is reflected multiple times from multiple surfaces, the echo is characterized as a reverberation.
The word echo derives from the Greek ἠχώ (ēchō),[1] itself from ἦχος (ēchos), "sound".[2] Echo in the folk story of Greek is a mountain nymph whose ability to speak was cursed, only able to repeat the last words anyone spoke to her. Some animals use echo for location sensing and navigation, such as cetaceans (dolphins and whales)
Acoustic waves akola are reflected by walls or other hard surfaces, such as mountains and privacy fences. The reason of reflection may be explained as a discontinuity in the propagation medium. This can be heard when the reflection returns with sufficient magnitude and delay to be perceived distinctly. When sound, or the echo itself, is reflected multiple times from multiple surfaces, the echo is characterized as a reverberation.
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