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In the seventeenth century, the French astronomer Jean Picard

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In the seventeenth century, the French astronomer Jean Picard  [#permalink]

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New post 23 Jan 2019, 06:55
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In the seventeenth century, the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and used that to calculate the size of Earth.

1>the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and used that to calculate the size of Earth.
2>the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and made use of it in the calculation of the size of Earth.
3>the French astronomer Jean Picard made the first accurate measurement of the length of a degree of a meridian and used it to calculate the size of Earth.
4>the first accurate measurement of the length of a degree of a meridian was made by the French astronomer Jean Picard, and he used that to calculate the size of Earth.
5>the length of a degree of a meridian was first accurately measured by the French astronomer Jean Picard, who calculated the size of Earth with it.
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In the seventeenth century, the French astronomer Jean Picard  [#permalink]

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New post 23 Jan 2019, 11:39
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1>the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and used that to calculate the size of Earth.
-lack of tense agreement between 'to measure' and 'used'
-the pronoun 'that' is vague (not clear reference)

2>the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and made use of it in the calculation of the size of Earth.
-lack of tense agreement between 'to measure' and 'made'
- 'in the calculation of the size of Earth' is awkward and wordy.

3>the French astronomer Jean Picard made the first accurate measurement of the length of a degree of a meridian and used it to calculate the size of Earth.

4>the first accurate measurement of the length of a degree of a meridian was made by the French astronomer Jean Picard, and he used that to calculate the size of Earth.
- passive voice is used
-the pronoun 'that' is vague (not clear reference)

5>the length of a degree of a meridian was first accurately measured by the French astronomer Jean Picard, who calculated the size of Earth with it.
-'first' gives a different meaning (as if : the length was at the beginning measured by ... then something new happen)
- passive voice is used
- comma should be used before 'who'.

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Re: In the seventeenth century, the French astronomer Jean Picard  [#permalink]

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New post 24 Jan 2019, 06:31
In the seventeenth century, the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and used that to calculate the size of Earth.

1>the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and used that to calculate the size of Earth. Wrong
2>the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and made use of it in the calculation of the size of Earth. Wrong - made use of it - unecessarily wordy(?)
3>the French astronomer Jean Picard made the first accurate measurement of the length of a degree of a meridian and used it to calculate the size of Earth. Correct - 'it' correctly refers the the measurement of the meridian
4>the first accurate measurement of the length of a degree of a meridian was made by the French astronomer Jean Picard, and he used that to calculate the size of Earth. Wrong
5>the length of a degree of a meridian was first accurately measured by the French astronomer Jean Picard, who calculated the size of Earth with it. Wrong
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Re: In the seventeenth century, the French astronomer Jean Picard  [#permalink]

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New post 24 Jan 2019, 09:34
1) the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and used that to calculate the size of Earth. "That" is ambiguous. also "that" should be used for original copy.
2)the French astronomer Jean Picard became the first person to accurately measure the length of a degree of a meridian and made use of it in the calculation of the size of Earth. Too much wordy
3) the French astronomer Jean Picard made the first accurate measurement of the length of a degree of a meridian and used it to calculate the size of Earth. Only sentence which removes all errors
4) the first accurate measurement of the length of a degree of a meridian was made by the French astronomer Jean Picard, and he used that to calculate the size of Earth. stmt after comma should refer to the subject doing the action incorrect
5) the length of a degree of a meridian was first accurately measured by the French astronomer Jean Picard, who calculated the size of Earth with it. stmt after comma should refer to the subject doing the action incorrect
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Re: In the seventeenth century, the French astronomer Jean Picard   [#permalink] 24 Jan 2019, 09:34
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In the seventeenth century, the French astronomer Jean Picard

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