The first communication satellite was Echo NASA

The first passive satellite transponder was known as Echo 1, launched by NASA in 1960. It was a large, balloon-like satellite that reflected radio signals back to Earth, enabling long-distance communication.

The first communications satellite was named Echo 1. It was launched by NASA in 1960 and was a passive satellite that reflected signals back to Earth to demonstrate the feasibility of using satellites for long-distance communications.

Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo

The repetition of sound caused by the reflection of sound waves is called an echo. It occurs when sound waves bounce off surfaces and return to the listener after a delay, creating a distinct repetition of the original sound.

The first US communications satellite to amplify radio and TV signals was called Echo 1. It was launched on August 12, 1960, and was a passive communications satellite that reflected signals rather than amplifying them.

Very loud! *ECHO* *ECHo* *ECho* *Echo* *echo*

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 " ";;

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 " - - ";;

24) echo -n " - ";;

25) echo -n " - - ";;

26) echo -n " - - ";;

27) echo -n " - - ";;

28) echo -n " - - ";;

29) echo -n " - - ";;

30) echo -n " - - ";;

31) echo -n " - ";;

32) echo -n " - - ";;

33) echo -n " - - ";;

34) echo -n " - ";;

35) echo -n " - - ";;

36) echo -n " - - ";;

37) echo -n " - - ";;

38) echo -n " - - ";;

39) echo -n " - - ";;

40) echo -n " - ";;

41) echo -n " ";;

42) echo -n " - ";;

43) echo -n " - ";;

44) echo -n " ";;

45) echo -n " - ";;

46) echo -n " - ";;

47) echo -n " - ";;

48) echo -n " - ";;

49) echo -n " - ";;

50) echo -n " - - ";;

51) echo -n " - ";;

52) echo -n " - - ";;

53) echo -n " - - ";;

54) echo -n " - ";;

55) echo -n " - - ";;

56) echo -n " - - ";;

57) echo -n " - - ";;

58) echo -n " - - ";;

59) echo -n " - - ";;

esac

echo -n " "

#seconds#

case $sec 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 " - - ";;

24) echo -n " - ";;

25) echo -n " - - ";;

26) echo -n " - - ";;

27) echo -n " - - ";;

28) echo -n " - - ";;

29) echo -n " - - ";;

30) echo -n " - - ";;

31) echo -n " - ";;

32) echo -n " - - ";;

33) echo -n " - - ";;

34) echo -n " - ";;

35) echo -n " - - ";;

36) echo -n " - - ";;

37) echo -n " - - ";;

38) echo -n " - - ";;

39) echo -n " - - ";;

40) echo -n " - ";;

41) echo -n " ";;

42) echo -n " - ";;

43) echo -n " - ";;

44) echo -n " ";;

45) echo -n " - ";;

46) echo -n " - ";;

47) echo -n " - ";;

48) echo -n " - ";;

49) echo -n " - ";;

50) echo -n " - - ";;

51) echo -n " - ";;

52) echo -n " - - ";;

53) echo -n " - - ";;

54) echo -n " - ";;

55) echo -n " - - ";;

56) echo -n " - - ";;

57) echo -n " - - ";;

58) echo -n " - - ";;

59) echo -n " - - ";;

esac

echo""

esac

#for line 2#

case $line in

2)

#for hour#

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 " |";;

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 " | |";;

24) echo -n " |";;

25) echo -n " ";;

26) echo -n " ";;

27) echo -n " | |";;

28) echo -n " |";;

29) echo -n " |";;

30) echo -n " |";;

31) echo -n " | |";;

32) echo -n " | |";;

33) echo -n " | |";;

34) echo -n " |";;

35) echo -n " ";;

36) echo -n " ";;

37) echo -n " | |";;

38) echo -n " |";;

39) echo -n " |";;

40) echo -n "| |";;

41) echo -n "| | |";;

42) echo -n "| | |";;

43) echo -n "| | |";;

44) echo -n "| |";;

45) echo -n "| ";;

46) echo -n "| ";;

47) echo -n "| | |";;

48) echo -n "| |";;

49) echo -n "| | |";;

50) echo -n "| | |";;

51) echo -n "| |";;

52) echo -n "| |";;

53) echo -n "| |";;

54) echo -n "| | |";;

55) echo -n "| | ";;

56) echo -n "| | ";;

57) echo -n "| |";;

58) echo -n " | |";;

59) echo -n " | |";;

esac

echo -n " "

#for seconds#

case $sec 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 " | |";;

24) echo -n " |";;

25) echo -n " ";;

26) echo -n " ";;

27) echo -n " | |";;

28) echo -n " |";;

29) echo -n " |";;

30) echo -n " |";;

31) echo -n " | |";;

32) echo -n " | |";;

33) echo -n " | |";;

34) echo -n " |";;

35) echo -n " ";;

36) echo -n " ";;

37) echo -n " | |";;

38) echo -n " |";;

39) echo -n " |";;

40) echo -n "| |";;

41) echo -n "| | |";;

42) echo -n "| | |";;

43) echo -n "| | |";;

44) echo -n "| |";;

45) echo -n "| ";;

46) echo -n "| ";;

47) echo -n "| | |";;

48) echo -n "| |";;

49) echo -n "| | |";;

50) echo -n "| | |";;

51) echo -n "| |";;

52) echo -n "| |";;

53) echo -n "| |";;

54) echo -n "| | |";;

55) echo -n "| | ";;

56) echo -n "| | ";;

57) echo -n "| |";;

58) echo -n " | |";;

59) echo -n " | |";;

esac

echo ""

esac

#line 3#

case $line in

3)

#for hour#

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 " - ";;

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 " - - ";;

24) echo -n " - - ";;

25) echo -n " - - ";;

26) echo -n " - - ";;

27) echo -n " - ";;

28) echo -n " - - ";;

29) echo -n " - - ";;

30) echo -n " - ";;

31) echo -n " - ";;

32) echo -n " - - ";;

33) echo -n " - - ";;

34) echo -n " - - ";;

35) echo -n " - - ";;

36) echo -n " - - ";;

37) echo -n " - ";;

38) echo -n " - - ";;

39) echo -n " - - ";;

40) echo -n " - ";;

41) echo -n " - ";;

42) echo -n " - - ";;

43) echo -n " - - ";;

44) echo -n " - - ";;

45) echo -n " - - ";;

46) echo -n " - - ";;

47) echo -n " - ";;

48) echo -n " - - ";;

49) echo -n " - - ";;

50) echo -n " - ";;

51) echo -n " - ";;

52) echo -n " - - ";;

53) echo -n " - - ";;

54) echo -n " - - ";;

55) echo -n " - - ";;

56) echo -n " - - ";;

57) echo -n " - ";;

58) echo -n " - - ";;

59) echo -n " - - ";;

esac

echo -n " "

#for secs #

case $sec 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 " - - ";;

24) echo -n " - - ";;

25) echo -n " - - ";;

26) echo -n " - - ";;

27) echo -n " - ";;

28) echo -n " - - ";;

29) echo -n " - - ";;

30) echo -n " - ";;

31) echo -n " - ";;

32) echo -n " - - ";;

33) echo -n " - - ";;

34) echo -n " - - ";;

35) echo -n " - - ";;

36) echo -n " - - ";;

37) echo -n " - ";;

38) echo -n " - - ";;

39) echo -n " - - ";;

40) echo -n " - ";;

41) echo -n " - ";;

42) echo -n " - - ";;

43) echo -n " - - ";;

44) echo -n " - - ";;

45) echo -n " - - ";;

46) echo -n " - - ";;

47) echo -n " - ";;

48) echo -n " - - ";;

49) echo -n " - - ";;

50) echo -n " - ";;

51) echo -n " - ";;

52) echo -n " - - ";;

53) echo -n " - - ";;

54) echo -n " - - ";;

55) echo -n " - - ";;

56) echo -n " - - ";;

57) echo -n " - ";;

58) echo -n " - - ";;

59) echo -n " - - ";;

esac

echo ""

esac

#line 4#

case $line in

4)

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 " "

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 " | |";;

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 "| |";;

24) echo -n "| |";;

25) echo -n "| |";;

26) echo -n "| | |";;

27) echo -n "| |";;

28) echo -n "| | |";;

29) echo -n "| |";;

30) echo -n " |";;

31) echo -n " | |";;

32) echo -n " ";;

33) echo -n " | |";;

34) echo -n " | |";;

35) echo -n " | |";;

36) echo -n " |";;

37) echo -n " | |";;

38) echo -n " |";;

39) echo -n " | |";;

40) echo -n " |";;

41) echo -n " | |";;

42) echo -n " ";;

43) echo -n " | |";;

44) echo -n " | |";;

45) echo -n " | |";;

46) echo -n " |";;

47) echo -n " | |";;

48) echo -n " |";;

49) echo -n " | |";;

50) echo -n " |";;

51) echo -n " | |";;

52) echo -n " ";;

53) echo -n " | |";;

54) echo -n " | |";;

55) echo -n " | |";;

56) echo -n " |";;

57) echo -n " | |";;

58) echo -n " |";;

59) echo -n " | |";;

esac

echo -n " "

case $sec 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 "| |";;

24) echo -n "| |";;

25) echo -n "| |";;

26) echo -n "| | |";;

27) echo -n "| |";;

28) echo -n "| | |";;

29) echo -n "| |";;

30) echo -n " |";;

31) echo -n " | |";;

32) echo -n " ";;

33) echo -n " | |";;

34) echo -n " | |";;

35) echo -n " | |";;

36) echo -n " |";;

37) echo -n " | |";;

38) echo -n " |";;

39) echo -n " | |";;

40) echo -n " |";;

41) echo -n " | |";;

42) echo -n " ";;

43) echo -n " | |";;

44) echo -n " | |";;

45) echo -n " | |";;

46) echo -n " |";;

47) echo -n " | |";;

48) echo -n " |";;

49) echo -n " | |";;

50) echo -n " |";;

51) echo -n " | |";;

52) echo -n " ";;

53) echo -n " | |";;

54) echo -n " | |";;

55) echo -n " | |";;

56) echo -n " |";;

57) echo -n " | |";;

58) echo -n " |";;

59) echo -n " | |";;

esac

echo ""

esac

#line 5#

case $line in

5)

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 " "

case $min in

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esac

echo -n " "

case $sec in

00) echo -n " - - ";;

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esac

esac

done #end of for loop#

if test $# -gt 0

then

if test $1 = -r

then

echo -n "`date +%p`"

echo ""

else

echo ""

fi

else

echo ""

fi

Echo.

Echo Echo was created on 2001-03-31.

An Echo-echo-echo-echo! The answer is Echo

You don't really have a question here. If the satellite is in orbit, the mass is essentially irrelevant; it wouldn't change the speed of the orbit or the altitude. A larger satellite mass WOULD HAVE required more fuel and more energy to LAUNCH it, but once in orbit, it will stay there.

The only exception would be an exceptionally large, light satellite. There is still some minuscule traces of atmosphere at 200 miles, and a large, light satellite would be slowed by air friction much more than a small dense satellite would. This is what caused the "ECHO" satellite - essentially a silvered mylar balloon inflated in orbit as a primitive reflector comsat - to deorbit.

Echo Valley is 5' 4".

mega fusion echo echo is located in genius grove

it is an echo

If memory serves - this was a lot of years ago - the Echo satellite(s) were launched in 1960.

They were enormous "beach balls" that inflated in space after launch, and the outer skin was a shiny Mylar-type material. They were mainly an experiment in communications - bouncing signals from one place to another, and they had a planned finite life before they descended and burned in the upper atmosphere. The great-grandfathers of today's communication satellites.

I will not swear to the year above, but I am almost certain it was 1960-61

Echo's name in greek is echo

The nymph that was spurned by Narcissus was Echo.

i would say ult echo echo

That is the correct spelling of the verb form "echoed (reverbrated).

My English teacher always sings "Question Opinion (echo) Reason 1 (echo) Then another reason (echo) Need a rebuttal (echo) Yes I do( echo) then a conclusion (echo) now your done (echo)" Hopefully this is helpful!!

To find the mini echo echo in FusionFall, head to the area in Sector V near the waterfall. Look for a small cave entrance where you will find the mini version of Echo Echo. Defeat him to gain a Nano.

Ulimate echo echo was just used in the episode Map of Infinty

PRESTIGE Worldwide (echo, echo, echo)

If you sing a song with echo, it is an echo song!? :-D

the roman name for echo is echo there is no other name for her...

an echo

&quot; / "

and

&#39; / '

However the same starter must end e.g.:

echo " '; is wrong

echo ' "; is wrong

echo " ' "; is right

echo ' " '; is right

echo " " ' '; is wrong - in this case echo " " . ' '; is right.

echo

The address of the Echo Public Library is: 20 S. Bonanza, Echo, 97826 0009

The address of the Echo Historical Museum is: Po Box 205, Echo, OR 97826

echo turns into the echo we hear today.

The plural form for the noun echo is echos.

Echo... Echo... Echo

The plural form of echo is echoes.
The plural of echo is echoes.

satellite is satellite

reflected sound is either reverberation or echo

ya

is the goddess echo a hero and why

Echo was single

We Be the Echo was created in 2003.

Be My Echo was created in 2002.

That is not a sentence. And echo's are physics.

The first communication satellite launched by the US was called Telstar 1, and it was launched in 1962. Telstar 1 was instrumental in allowing live television broadcasts and telephone calls to be transmitted across the Atlantic Ocean for the first time.

Echo Johnson's birth name is Johnson, Echo Leta.

Echo Newspapers was created in 1985.

Echo is a delay of sound - it comes at a slower rate and appears to echo. Often distance is a major factor of echo.

land satellite

sea satellite

communication satellite

weather satellite and

spy satellite

Elvis Presley's 'Blue moon of Kentucky' was bounced off a passive satellite called Echo 1 in 1960. This was a huge reflective balloon filled with gas that was inflated in space.

echo cat will print out the word 'cat' on the command line.

cat echo will attempt to list the contents of a file called 'echo'.