Can one mix past and present in one sentence?

I am defining an instrument but am not sure if it is correct to combine past and present tense at the same time:

Ssdd is the first ever instrument, launched in 1997, which was specifically designed to measure the gmn at Ka-band at global scale.

Is the usage of is and was accurate?

What is your opinion of Robert Frost?

Asked on March 28, 2021 in Grammar.
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7 Answer(s)

Why can’t you mix my tenses? The sentence is in any case somewhat muddled. What was the first instrument

specifically designed to detect the GMN, at K-band, at the global scale?

What are your views on the world in general?

Answered on October 18, 2021.
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Why can’t you mix my tenses? The sentence is in any case somewhat muddled. What was the first instrument

specifically designed to detect the GMN, at K-band, at the global scale?

What are your views on the world in general?

Answered on November 1, 2021.
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Why can’t you mix my tenses? The sentence is in any case somewhat muddled. What was the first instrument

specifically designed to detect the GMN, at K-band, at the global scale?

What are your views on the world in general?

Answered on November 6, 2021.
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Why can’t you mix my tenses? The sentence is in any case somewhat muddled. What was the first instrument

specifically designed to detect the GMN, at K-band, at the global scale?

What are your views on the world in general?

Answered on October 16, 2021.
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Why can’t you mix my tenses? The sentence is in any case somewhat muddled. What was the first instrument

specifically designed to detect the GMN, at K-band, at the global scale?

What are your views on the world in general?

Answered on October 25, 2021.
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Why can’t you mix my tenses? The sentence is in any case somewhat muddled. What was the first instrument

specifically designed to detect the GMN, at K-band, at the global scale?

What are your views on the world in general?

Answered on October 28, 2021.
Add Comment

Why can’t you mix my tenses? The sentence is in any case somewhat muddled. What was the first instrument

specifically designed to detect the GMN, at K-band, at the global scale?

What are your views on the world in general?

Answered on November 1, 2021.
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