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Victor_amelkin Posted 16 years ago
Grammar

"(the?) high-frequency radiation"

Hello,

Suggest please whether the definite article is required/acceptable

within the highlighted area in the following sentence:

"Gases in the ionosphere are partly ionized by ... high-frequency
radiation from the Sun."

I would place "the" here; the book does not.

Thanks in advance.

--

Victor
  

Top answer

"Gases in the ionosphere are partly ionized by ... " I prefer to omit the article, but it would not be incorrect to include it. If you were to omit the qualifier "from the sun," you obviously would not use the article.

— Avangi

  • "Gases in the ionosphere are partly ionized by ...
  • " I prefer to omit the article, but it would not be incorrect to include it.
  • If you were to omit the qualifier "from the sun," you obviously would not use the article.
  • When you include the qualifier, you're specifying " which hf radiation," so the definite article is justified.
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9 Answers
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"Gases in the ionosphere are partly ionized by ... high-frequency
radiation from the Sun."

I prefer to omit the article, but it would not be incorrect to include it.

If you were to omit the qualifier "from the sun," you obviously would not use the article. When you include the qual
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victor_amelkin"Gases in the ionosphere are partly ionized by [the].. high-frequency
radiation from the Sun."
The - pertains to the sun's radiation. It requires the definite article.
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How do you run this machine? (reply) With energy from the sun. (no article)

Where do you get [the] energy to run this machine? (reply) We get the energy from the sun.
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AvangiHow do you run this machine? (reply) With energy from the sun. (no article)
Hi Avangi,
Are you testing my sobriety
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With _ energy ... (no article)
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victor_amelkinWith _ energy ... (no article)
I would still use [the] article. The- pertains to [the] energy from [the] sun.
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dimsumexpress Are you testing my sobriety
You passed with flying colors, my friend.

Actually there were two definite articles involved in the discussion:
The radiation from the sun.

I was intending to weigh in on the side of omitting the first one in certain cases.

I have the feeling you may be difficult to pers
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AvangiI have the feeling you may be difficult to persuade.
Um...I have to admit, I favor using a definite article with 'radiation from the sun'. Simply, if I rephrase the question: what kind of radiation?, the need for the definite article is pretty clear.
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If you substitute "some" for "the," it makes it pretty clear that "the energy from the sun" means "all the energy from the sun."

We run the machine with some energy from the sun.
We run the machine with the energy from the sun.
We run the machine with energy from the sun.

I think the last version is most natural. [H]

We run our cars on p
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