[Vocabulary] bounce off, reflect back, return, come back

[Venus.jam]

hi

Are all of the following words synonymous with each other?

"bounce off, reflect back, return, come back"

 

[GoesStation]

Some of the words and phrases you listed can be synonyms.

 

[Rover_KE]

Venus.jam, please write some sentences in which you think they may all have the same meaning.

 

[Venus.jam]

I need to provide a synonym for "come back". I was wondering if all of the above-mentioned words are synonymous with "come back".

1. sonar uses waves that are sent out and return with a different frequency when they bounce off objects.
2. Bats send out waves that are reflected back by trees, etc.
3. when the waves bounce off objects and come back to the bats, the waves are a different frequency.

 

[GoesStation]

I need to provide a synonym for "come back". I was wondering if all of the above-mentioned words are synonymous with "come back".

1. sonar uses waves that are sent out and return with a frequency when they bounce off objects.
2. Bats send out waves that are reflected back by trees, etc.
3. when the waves bounce off objects and come back to the bats, the waves are a different frequency.

The sentences would all be grammatically correct if 1 and 3 began with capital letters. Sentences 1 and 3 are not scientifically correct, though. In sentence 1, "return with a frequency" doesn't mean anything because all sound waves have one or more frequencies. In sentence 3, the sound waves don't change frequency unless the objects they bounce off are moving towards or away from the sonar device.

 

[Venus.jam]

The sentences would all be grammatically correct if 1 and 3 began with capital letters. Sentences 1 and 3 are not scientifically correct, though. In sentence 1, "return with a frequency" doesn't mean anything because all sound waves have one or more frequencies. In sentence 3, the sound waves don't change frequency unless the objects they bounce off are moving towards or away from the sonar device.

I see. This has been taken from a book. By the way, the third sentence is not related to sonar devices but to bats. So which of the above mentioned words can be considered as synonyms for "come back" ?

 

[GoesStation]

I need to provide a synonym for "come back". I was wondering if all of the above-mentioned words are synonymous with "come back".

1. sonar uses waves that are sent out and return with a frequency when they bounce off objects.
2. Bats send out waves that are reflected back by trees, etc.
3. when the waves bounce off objects and come back to the bats, the waves are a different frequency.

I see. This has been taken from a book. By the way, the third sentence is not related to sonar devices but to bats. So which of the above mentioned words can be considered as synonyms for "come back" ?

If you've quoted the book exactly, you should discard it. It's carelessly written and incorrect.

You could replace return with "come back".

 

[Rover_KE]

This has been taken from a book.

In future threads, please tell us the title and author of any book you are quoting from in post #1.

 

[emsr2d2]

And please tell us now the source and author involved in this thread.

 

[Venus.jam]

Would you please let me know why is it necessary?

 

[Rover_KE]

It's one of the forum rules.

Always give your sources and the URL where appropriate. Copyright applies to texts, pictures, etc and the site can be held responsible if people post things here that breach the laws. If we see complete texts being posted or other copyright infringements, we will remove the post.

 

[GoesStation]

Would you please let me know why is it necessary?

Write Would you please let me know why this is necessary? In this question, the subject-verb inversion happens in the first two words. Everything that follows them is a statement which the question refers to.

 

[Venus.jam]

Write Would you please let me know why this is necessary? In this question, the subject-verb inversion happens in the first two words. Everything that follows them is a statement which the question refers to.

"I wonder why this is necessary." What about this one? Shall I use a period after that or a question mark?

 

[Rover_KE]

"I wonder why this is necessary" is a statement, so a period (full stop) is needed.

 

[Charlie Bernstein]

Would you please let me know why is it necessary?

It helps us understand what's going on. We treat what a character in a comic book says differently than we treat what a science textbook says.

 

[Charlie Bernstein]

"I wonder why this is necessary." What about this one? Shall I use a period after that or a question mark?

No. When in doubt, diagram! As Rover says, "I wonder" is a statement, not a question.

 

[Raymott]

I find the question to be badly-formed. It can only be answered intelligently if we understand what you need a synonym for; or, if we say they are all synonyms, you are not going to assume that you can interchange them all. A context is needed.