it is known from

USAGE SUMMARY

The phrase 'it is known from' is correct and usable in written English.
You can use it when you want to introduce information that is based on observations or other evidence. For example, "It is known from scientific studies that the Earth's climate is changing."

✓ Grammatically correct

Science

Academia

Wiki

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

In Connecticut it is known from only a few counties.

Yale University

In Panama it is known from La Reserva de Fortuna, Chiriquí (Tejera 2001).

Cornell University

Nothing comparable to it is known from any ancient scientific text or literary allusion," he wrote.

The Washington Post

Nothing comparable to it is known from any ancient scientific text or literary allusion.

The New Yorker

It is known from many localities around the world, but time correlations lack precision.

Encyclopedia Britannica

It is known from [6] that every feasible array is a prefix table of some indeterminate string.

Journal of Discrete Algorithms

Unfortunately the endurance limit does not follow this trend as it is known from cold-worked austenitic CrNi steels.

International Journal of Fatigue

It is known from hundreds of cranial and postcranial specimens.

Evolution: Education and Outreach

It is known from (2.8) and (3.4) that the inequality (3.3) is valid.

Journal of Inequalities and Applications

It is known from [20], Proposition 5.1, for this basis, that (g_{n}=2n).

Journal of Inequalities and Applications

We discuss an event in which it is known from external data in the next section.

Earth, Planets and Space

Expert writing Tips

Best practice

When using "it is known from", clearly indicate the source of information, whether it's a specific study, general knowledge, or a particular field.

Common error

Avoid using "it is known from" without specifying the source or context. Be specific about where the information originates to maintain credibility.

Linguistic Context

The phrase "it is known from" serves as an introductory device used to present information that is derived from existing knowledge, research, or established sources. It signals that the subsequent statement is not a novel claim but rather a conclusion based on previously established facts. According to Ludwig, this phrase is grammatically correct.

Expression frequency: Very common

Frequent in

Science

54%

Academia

10%

Wiki

10%

Less common in

News & Media

6%

Formal & Business

0%

Encyclopedias

2%

Ludwig's WRAP-UP

The phrase "it is known from" is a grammatically sound and frequently employed construction used to introduce information supported by existing evidence or knowledge. As confirmed by Ludwig, it's suitable for academic, scientific, and professional contexts, signaling a reliance on established facts rather than novel claims. While versatile, best practice dictates clearly stating the source or context from which the knowledge is derived. Common alternatives include "studies have shown that", "research indicates that", and "according to", depending on the desired level of formality and attribution. Although widely accepted, remember that vague references detract from credibility, thus it's vital to specify the information's origin whenever employing "it is known from".

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

Studies have shown that

Specifically refers to findings from research.

The literature suggests that

Refers to a body of published work.

It has been established that

Highlights the well-established nature of the information.

Research indicates that

Similar to 'studies have shown', but slightly broader.

Evidence suggests that

Highlights the presence of supporting evidence.

According to

Attributes the information to a specific source.

It is documented that

Suggests formal or official record.

Previous work demonstrates that

Emphasizes prior research or efforts.

It is understood that

Implies a general understanding or consensus.

Based on existing knowledge

Emphasizes the foundation of the information.

FAQs

How can I use "it is known from" in a sentence?

Use "it is known from" to introduce a fact or information that is supported by existing evidence or knowledge. For example, "It is known from scientific studies that regular exercise improves cardiovascular health."

What are some alternatives to "it is known from"?

You can use alternatives like "studies have shown that", "research indicates that", or "according to" depending on the context.

Is "it is known from" formal or informal?

"It is known from" is generally considered a neutral to formal phrase, suitable for academic, scientific, and professional writing. It is less common in informal conversation.

What's the difference between "it is known from" and "it is believed that"?

"It is known from" suggests that the information is based on evidence, while "it is believed that" implies a subjective opinion or unverified assumption. Choose the phrase that accurately reflects the basis of the information.