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# The physical structure of the human eye enables it to sense

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The physical structure of the human eye enables it to sense [#permalink]

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25 Sep 2007, 07:34
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The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.
(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye

I have done small modification in this SC....

Last edited by b14kumar on 25 Sep 2007, 07:53, edited 1 time in total.

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Director
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25 Sep 2007, 07:46
b14kumar wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.
(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye

The reason I think A is wrong is because the use of 'however' makes the use of a semicolon incorrect; Semicolons are used for sentences that can stand by themselves. Isn't that so?

That's the only thing I find wrong with A.

Close call b/w B and E for me.

B sounds wrong because of the use of 'it' at the end of the sentence which is ambiguous.

E sounds wrong because however precedes infrared.

Considering I'm running out of time, I pick B.

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25 Sep 2007, 08:00
GK_Gmat wrote:
b14kumar wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.
(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye

The reason I think A is wrong is because the use of 'however' makes the use of a semicolon incorrect; Semicolons are used for sentences that can stand by themselves. Isn't that so?

That's the only thing I find wrong with A.

Close call b/w B and E for me.

B sounds wrong because of the use of 'it' at the end of the sentence which is ambiguous.

E sounds wrong because however precedes infrared.

Considering I'm running out of time, I pick B.

GK - you make a valid point. However B is clearly out because it has a modifier problem - "by the eye making it invisible" erroneously makes the eye invisible - so B is out.

As far as A goes -

The use of semicolon followed by a conjunctive adverb such as However, furthermore, Nevertheless, Likewise, Moreover etc is perfectly acceptable and is often used to connect independent clauses just as a coordinating conjunction is used to connect two independent clauses.

However after I read your post, I realized that A is not right because it actually breaks the structure required by conjunctive adverbs - A conjunctive adverb should follow the semicolon immediately and in turn must be followed by a comma. Choice E mirrors that, so unfortunately i'll have to recant my earlier choice - A - and go for E instead.

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Director
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25 Sep 2007, 08:26
dwivedys wrote:
GK_Gmat wrote:
b14kumar wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.
(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye

The reason I think A is wrong is because the use of 'however' makes the use of a semicolon incorrect; Semicolons are used for sentences that can stand by themselves. Isn't that so?

That's the only thing I find wrong with A.

Close call b/w B and E for me.

B sounds wrong because of the use of 'it' at the end of the sentence which is ambiguous.

E sounds wrong because however precedes infrared.

Considering I'm running out of time, I pick B.

GK - you make a valid point. However B is clearly out because it has a modifier problem - "by the eye making it invisible" erroneously makes the eye invisible - so B is out.

As far as A goes -

The use of semicolon followed by a conjunctive adverb such as However, furthermore, Nevertheless, Likewise, Moreover etc is perfectly acceptable and is often used to connect independent clauses just as a coordinating conjunction is used to connect two independent clauses.

However after I read your post, I realized that A is not right because it actually breaks the structure required by conjunctive adverbs - A conjunctive adverb should follow the semicolon immediately and in turn must be followed by a comma. Choice E mirrors that, so unfortunately i'll have to recant my earlier choice - A - and go for E instead.

Sorry GK_gmat, there was typo in option E.

Well, good catch "dwivedys".

I also read and saw examples where Conjuctive Adverbs are used to connect two independent clause using a semicolon and a comma.

Ex-

There was a huge crowd yesterday waiting to meet me; however, I managed to escape from that place.

Now see the order:

(First Independent Clause) - (a semicolon) - (a conjuctive adverb) - ( a comma) - (Second Independent Clause)

I thought we need to follow this sequence everytime to make this type of sentences.

However, I saw this SC in Verbal Review and found that OA was A.
But option E was different than what I have included in this SC.

In anycase, if we have to follow above sequence then how could option A be right in Verbal Review??

Here is one more SC from Verbal Review:

In theory, international civil servants at the United Nations are prohibited from continuing to draw salaries from their own governments; in practice, however, some governments merely substitute living allowances for their employees' paychecks, assigned by them to the United Nations.

A. for their employees' paychecks, assigned by them
B. for the paychecks of their employees who have been assigned
C. for the paychecks of their employees, having been assigned
D. in place of their employees' paychecks, for those of them assigned
E. in place of the paychecks of their employees to have been assigned by them

Notice the Adverb "in practice" placed between the semicolon and the comma followed by a Conjuctive Adverb "however".

I think GMAT likes this construction......

So can I modify my Ex?

Ex-

There was a huge crowd yesterday waiting to meet me; I, however, managed to escape from that place.

- Brajesh

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Manager
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26 Sep 2007, 14:53
"a"

The difference between 'A' and 'E' is very close but i would go with "a" because it is a complete clause.

"e" the second sentence, if read alone, is not a complete clause.

Kudos [?]: 6 [0], given: 0

VP
Joined: 15 Jul 2004
Posts: 1438

Kudos [?]: 226 [0], given: 13

Schools: Wharton (R2 - submitted); HBS (R2 - submitted); IIMA (admitted for 1 year PGPX)

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26 Sep 2007, 15:51
b14kumar wrote:
dwivedys wrote:
GK_Gmat wrote:
b14kumar wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.
(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye

The reason I think A is wrong is because the use of 'however' makes the use of a semicolon incorrect; Semicolons are used for sentences that can stand by themselves. Isn't that so?

That's the only thing I find wrong with A.

Close call b/w B and E for me.

B sounds wrong because of the use of 'it' at the end of the sentence which is ambiguous.

E sounds wrong because however precedes infrared.

Considering I'm running out of time, I pick B.

GK - you make a valid point. However B is clearly out because it has a modifier problem - "by the eye making it invisible" erroneously makes the eye invisible - so B is out.

As far as A goes -

The use of semicolon followed by a conjunctive adverb such as However, furthermore, Nevertheless, Likewise, Moreover etc is perfectly acceptable and is often used to connect independent clauses just as a coordinating conjunction is used to connect two independent clauses.

However after I read your post, I realized that A is not right because it actually breaks the structure required by conjunctive adverbs - A conjunctive adverb should follow the semicolon immediately and in turn must be followed by a comma. Choice E mirrors that, so unfortunately i'll have to recant my earlier choice - A - and go for E instead.

Sorry GK_gmat, there was typo in option E.

Well, good catch "dwivedys".

I also read and saw examples where Conjuctive Adverbs are used to connect two independent clause using a semicolon and a comma.

Ex-

There was a huge crowd yesterday waiting to meet me; however, I managed to escape from that place.

Now see the order:

(First Independent Clause) - (a semicolon) - (a conjuctive adverb) - ( a comma) - (Second Independent Clause)

I thought we need to follow this sequence everytime to make this type of sentences.

However, I saw this SC in Verbal Review and found that OA was A.
But option E was different than what I have included in this SC.

In anycase, if we have to follow above sequence then how could option A be right in Verbal Review??

Here is one more SC from Verbal Review:

In theory, international civil servants at the United Nations are prohibited from continuing to draw salaries from their own governments; in practice, however, some governments merely substitute living allowances for their employees' paychecks, assigned by them to the United Nations.

A. for their employees' paychecks, assigned by them
B. for the paychecks of their employees who have been assigned
C. for the paychecks of their employees, having been assigned
D. in place of their employees' paychecks, for those of them assigned
E. in place of the paychecks of their employees to have been assigned by them

Notice the Adverb "in practice" placed between the semicolon and the comma followed by a Conjuctive Adverb "however".

I think GMAT likes this construction......

So can I modify my Ex?

Ex-

There was a huge crowd yesterday waiting to meet me; I, however, managed to escape from that place.

- Brajesh

Brajesh - i will admit to being confused between A and E becuase you had made them similar in structure. Since the choice had to be made I chose E because A appeared to be inconsistent with the conjunctive adverb formulae.

However I have seen the Verbal example (relating to paycheck) you've cited and I remember I had got it correct.

I think, when however, or any of the other conj adverbs are used as conjunctive adverbs they must adhere to semicolon and comma structure because a conjunctive adverb is not as powerful as a coordinating conjunction to be able to join independent clauses without a semicolon. CA's do require semicolons; in this respect, therefore, they cannot change the fundamental requirement of a semicolon being required to connect two independent clauses.

In structures such as the examples you've cited
There was a huge crowd yesterday waiting to meet me; I, however, managed to escape from that place.

However does not play the role of a Conjunctive adv but a regular adverb. The sentence meets the requirement of a semicolon punctuating two indep clauses.

Kudos [?]: 226 [0], given: 13

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08 Oct 2007, 10:42
dwivedys wrote:
b14kumar wrote:
dwivedys wrote:
GK_Gmat wrote:
b14kumar wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.
(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye

The reason I think A is wrong is because the use of 'however' makes the use of a semicolon incorrect; Semicolons are used for sentences that can stand by themselves. Isn't that so?

That's the only thing I find wrong with A.

Close call b/w B and E for me.

B sounds wrong because of the use of 'it' at the end of the sentence which is ambiguous.

E sounds wrong because however precedes infrared.

Considering I'm running out of time, I pick B.

GK - you make a valid point. However B is clearly out because it has a modifier problem - "by the eye making it invisible" erroneously makes the eye invisible - so B is out.

As far as A goes -

The use of semicolon followed by a conjunctive adverb such as However, furthermore, Nevertheless, Likewise, Moreover etc is perfectly acceptable and is often used to connect independent clauses just as a coordinating conjunction is used to connect two independent clauses.

However after I read your post, I realized that A is not right because it actually breaks the structure required by conjunctive adverbs - A conjunctive adverb should follow the semicolon immediately and in turn must be followed by a comma. Choice E mirrors that, so unfortunately i'll have to recant my earlier choice - A - and go for E instead.

Sorry GK_gmat, there was typo in option E.

Well, good catch "dwivedys".

I also read and saw examples where Conjuctive Adverbs are used to connect two independent clause using a semicolon and a comma.

Ex-

There was a huge crowd yesterday waiting to meet me; however, I managed to escape from that place.

Now see the order:

(First Independent Clause) - (a semicolon) - (a conjuctive adverb) - ( a comma) - (Second Independent Clause)

I thought we need to follow this sequence everytime to make this type of sentences.

However, I saw this SC in Verbal Review and found that OA was A.
But option E was different than what I have included in this SC.

In anycase, if we have to follow above sequence then how could option A be right in Verbal Review??

Here is one more SC from Verbal Review:

In theory, international civil servants at the United Nations are prohibited from continuing to draw salaries from their own governments; in practice, however, some governments merely substitute living allowances for their employees' paychecks, assigned by them to the United Nations.

A. for their employees' paychecks, assigned by them
B. for the paychecks of their employees who have been assigned
C. for the paychecks of their employees, having been assigned
D. in place of their employees' paychecks, for those of them assigned
E. in place of the paychecks of their employees to have been assigned by them

Notice the Adverb "in practice" placed between the semicolon and the comma followed by a Conjuctive Adverb "however".

I think GMAT likes this construction......

So can I modify my Ex?

Ex-

There was a huge crowd yesterday waiting to meet me; I, however, managed to escape from that place.

- Brajesh

Brajesh - i will admit to being confused between A and E becuase you had made them similar in structure. Since the choice had to be made I chose E because A appeared to be inconsistent with the conjunctive adverb formulae.

However I have seen the Verbal example (relating to paycheck) you've cited and I remember I had got it correct.

I think, when however, or any of the other conj adverbs are used as conjunctive adverbs they must adhere to semicolon and comma structure because a conjunctive adverb is not as powerful as a coordinating conjunction to be able to join independent clauses without a semicolon. CA's do require semicolons; in this respect, therefore, they cannot change the fundamental requirement of a semicolon being required to connect two independent clauses.

In structures such as the examples you've cited
There was a huge crowd yesterday waiting to meet me; I, however, managed to escape from that place.

However does not play the role of a Conjunctive adv but a regular adverb. The sentence meets the requirement of a semicolon punctuating two indep clauses.

Hmmm....Yes, it makse sense to me.....Thanks for your opinion dwivedys.
But still not sure why E is preferred over A.

- Brajesh

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08 Oct 2007, 20:16
I would go with A. OA please
----------------------------------------------------
Found something useful

Accordingly Afterwards
Also Consequently
However Indeed
Likewise Moreover
Nevertheless Nonetheless
Otherwise Similarly
So* Still
Therefore

NOTE: Because conjunctive adverbs are not true conjunctions, a semicolon is required when connecting two independent clauses.

Conjunctive adverbs other than SO or OTHERWISE require a semicolon preceding them and a comma following them.

I guess the answer is clear - I change to E.

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16 Mar 2008, 12:27
I'm going with A.

I don't like ;however,

I also like "by the eye", "it" seems ambiguous to me

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Re: SC - Infrared   [#permalink] 16 Mar 2008, 12:27
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# The physical structure of the human eye enables it to sense

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