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Echoes
Echoes are usually used to measure distances for example a "Bat" creates a high velocity sound wave that hits its pray "The Moth" and it comes back with an echo of where abouts it is.
Also something called an "Cardioechogram" also, known as a "Cardiogram" is used to measure the heart bps.
So Echoes Are An Useful Measuring Device.
Wiki User
∙ 14y ago
Wiki User
∙ 10y agoAn echo is the mere reflection of the Alpha signal, and will always be weaker than the Alpha due to the absorption of wave energy off reflected surfaces. An echo further degrades as reflected sound waves bounce off each other, often cancelling itself out until there is little to no impact whatsoever.
An echo is a sound or series of sounds caused by the reflection of sound waves from a surface.
Wiki User
∙ 15y agoecho is the second sound produced after reflection of sound waves on a rigid object.echo is produced only if the distance between the object producing the sound and the reflecting surface is long enough to allow the reflected waves to reach our ears 0.1seconds after the original sound is heard.this is because the sensation of hearing lasts only for 0.1 seconds after which the exciting stimulus ceases to act.
Wiki User
∙ 15y agoSince sound travels at a fixed speed (about 340 metres per second), it takes time to travel between the spot where the sound originated (ex: speakers, vocal chords...) and the spot where it is heard (your ear).
Another property of sound is that it can reflect from surfaces. This is just like when you throw a ball at a wall and it bounces back at you.
When you make a sound, you'll hear the sound waves the first time (when the sound travels from your vocal chords to your eardrum). Now, if there is a surface nearby, the sound will reflect from it, come back to you, and register in your eardrums a second time.
This effect is called an echo.
You won't hear an echo in a small room, because the time between the first and second time the sound registers in your ear is too small for your ear to tell the difference.
peace
Wiki User
∙ 14y agoAn echo is a repetation of a sound by reflection of sound waves from surface.
it is form when the sound hits the surface such as celling of hall, closed room, etc and get reflected. to hear the echo, the distance should be 17.2m
Wiki User
∙ 12y agoBats can find their way in dark by producing sound of high frequencies , sound hit the hard surface and come back after a short while. This method of detecting obstructions is called Echo Detection.
Wiki User
∙ 14y agoEchoes can be used to find the distance between an observer and a huge object like a hill.
First we produce some sound and wait for its echo. The time between the sound and the echo is noted as 't'.
The distance travelled by the sound wave is twice the distance between the observer and the object (as the wave travels to and fro). Let it be be '2r'.
If 'v' is the velocity of sound in air, then v = 2r / t
Therefore, r = vt / 2
Distance = (Velocity x time) / 2
The same principle can be used to find the depth of the sea. This technique is called SONAR (SOund NAvigation and Ranging). A ship produces ultrasonic sound waves and these are reflected by the ocean surface.
(check related links)
Wiki User
∙ 10y agoThe official definition of the word echo is "a sound or series of sounds caused by the reflection of sound waves from a surface back to the listener."
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What is a sound wave that reflects off a hard surface?
An Echo-echo-echo-echo! The answer is Echo
Who is better echo horizon or willows?
echo horizon
Where can you find a echo?
clap and listen for the echo an echo is just a reverberation of sound bouncing off something solid about 17 meters away and returning will produce an echo. You can't litterally find an echo just clap and listen for one.
Who invented echo?
Echo is a natural phenomenon, not invented.
When was The Black Echo created?
The Black Echo was created on 1992-01-21.
What are some Useful and not so useful echo?
A useful echo is echolocation, which is used by marine animals such as dolphins to locate and then hunt their prey
How can echo be useful?
Commuting is the preferred use.
When is it echo considered as useful?
Echo is caused due to reflection of sound and it has major applications in SONAR, which is used by submarines or planes to detect other objects
Echo's password on my LEGO network?
Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo
What do you call the repetition of sound caused by the reflection of sound waves?
echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo
What is use of echo command in dos?
The echo command is used to print a statement by default to the screen. example: echo Good Morning output: Good Morning note: quotes are not used and will be displayed in the output if used other examples: echo off/on - turns echo on or off, otherwise commands are visible on the screen. Useful for bat files. @echo off - the @ hides the line it precedes so use this for the first line. echo. - displays a blank line echo text > myfile.txt - writes to target location (myfile.txt), overwiting it if it exists. echo text >> myfile.txt - appends to the target (myfile.txt)
How loud is an echo in the Grand Canyon?
Very loud! *ECHO* *ECHo* *ECho* *Echo* *echo*
How do you create a computer program for a computer program without using a computer program?
i think you may make use of shell scripts, for example when your using Linux OS you may create computer program using some sorts of shells like BOURN-SHELL, KORN-SHELL, etc. the same when your using windows you may use DOS-COMMANDS. here is an example, i wrote a computer program which can print current time in 7 cristals. it is a Linux program # # myclock.sh # # ########################################################## #this program prints current time in 24hrs-format by default, #only when -r is supplied as an argument is going to print 12hrs-formats. # ########################################################### # MWENDAMSEKE IMANI # ############################################################ # # #this script print current time in digit form # # clear hour=`date +%H` min=`date +%M` sec=`date +%S` am_pm=`date +%p` if test $# -gt 0 then if test $1 = -r then if test $hour -gt 12 then hour=`expr $hour - 12` if test $hour -lt 10 then case $hour in 1) hour=01;; 2) hour=02;; 3) hour=03;; 4) hour=04;; 5) hour=05;; 6) hour=06;; 7) hour=07;; 8) hour=08;; 9) hour=09;; esac fi fi fi fi for ((line=1; line<=5; line++)) do case $line in 1) case $hour in 00) echo -n " - - ";; 01) echo -n " - ";; 02) echo -n " - - ";; 03) echo -n " - - ";; 04) echo -n " - ";; 05) echo -n " - - ";; 06) echo -n " - - ";; 07) echo -n " - - ";; 08) echo -n " - - ";; 09) echo -n " - - ";; 10) echo -n " - ";; 11) echo -n " ";; 12) echo -n " - ";; 13) echo -n " - ";; 14) echo -n " ";; 15) echo -n " - ";; 16) echo -n " - ";; 17) echo -n " - ";; 18) echo -n " - ";; 19) echo -n " - ";; 20) echo -n " - - ";; 21) echo -n " - ";; 22) echo -n " - - ";; 23) echo -n " - - ";; esac echo -n " " #for minutes# case $min in 00) echo -n " - - ";; 01) echo -n " - ";; 02) echo -n " - - ";; 03) echo -n " - - ";; 04) echo -n " - ";; 05) echo -n " - - ";; 06) echo -n " - - ";; 07) echo -n " - - ";; 08) echo -n " - - ";; 09) echo -n " - - ";; 10) echo -n " - ";; 11) echo -n " ";; 12) echo -n " - ";; 13) echo -n " - ";; 14) echo -n " ";; 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What is a common name for the reflection of sound waves?
Echo.
Understanding A Stress Echo?
A stress echo is a medical diagnostic test that can determine heart and vessel irregularities. An echocardiogram, which is an ultrasonic study of the heart is done immediately following a stress test, which evaluates heart function during exercise. The stress echo can be useful in diagnosis blockages, electrical problems of the heart and valve abnormalities. No special preparation is required for the stress echo, however, some cardiologists may recommend that certain cardiac medications be held until after the stress echo has been performed.
When was Echo Echo created?
Echo Echo was created on 2001-03-31.
What is a sound wave that reflects off a hard surface?
An Echo-echo-echo-echo! The answer is Echo
