a constant amount of

USAGE SUMMARY

The phrase "a constant amount of" is correct and usable in written English.
It can be used when referring to a specific, unchanging quantity of something. Example: "In this experiment, we will maintain a constant amount of temperature to ensure accurate results."

✓ Grammatically correct

Science

News & Media

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

"There's a constant amount of social control that goes into maintaining those characteristics.

The New York Times - Books

"This means that a constant amount of fish is being divided more and more among a growing number of companies".

The New York Times

"The idea is to maintain a constant amount of moisture in the soil," said Tom Witherspoon, a foundation engineer in Dallas.

The New York Times

For example, a falling body has a constant amount of energy, but the form of the energy changes from potential to kinetic.

Encyclopedia Britannica

The other is the case where people pay a constant amount of medical expenditure.

Health Economics Review

At 873 K a constant amount of C2H2 was consumed repeatedly after several injections.

Carbon

Instead of injecting a constant amount of heat, the experiments have been performed using multiple short-duration heat injections.

International Journal of Heat and Mass Transfer

Figure 1 MND sorption characteristics depending on the AfB1 content in specimen at a constant amount of nanoparticles (a) and depending on the content of nanoparticles in specimen at a constant amount of AfB1 (volume 1 mL) (b).

Nanoscale Research Letters

Notice, the control group was exposed to a constant amount of exercise throughout the protocol, 150 m per week.

Sports Medicine - Open

Also, while the price of various items might increase, the items were worth a constant amount of gold or silver which did not fluctuate.

SEP

It could be that Einstein was right, that there is a cosmological constant, a constant amount of energy filling space evenly.

Forbes

Expert writing Tips

Best practice

When describing experimental conditions in scientific writing, use "a constant amount of" to clearly indicate a variable that is deliberately kept unchanged to isolate the effects of other variables.

Common error

Don't use ""a constant amount of"" if you are not precisely measuring the quantity. Instead, consider terms like "a consistent supply of" if the exact quantity is not critical, but the act of keeping consistent the input is the most important feature.

Linguistic Context

The phrase ""a constant amount of"" functions as a determiner phrase modifying a noun. It specifies that the noun it modifies has a quantity that does not change. As Ludwig AI explains, the phrase is grammatically correct and widely used.

Expression frequency: Very common

Frequent in

Science

79%

News & Media

13%

Encyclopedias

3%

Less common in

Formal & Business

2%

Reference

0%

Social Media

0%

Ludwig's WRAP-UP

The phrase ""a constant amount of"" is a grammatically sound and frequently used expression that conveys the idea of a fixed quantity. As confirmed by Ludwig AI, it is suitable for various contexts, with a strong presence in scientific literature where maintaining consistent conditions is essential. While alternatives like "a fixed quantity of" or "a stable quantity of" can be used, it’s crucial to choose the phrasing that best reflects the specific degree of precision and control intended. Ensure you are not implying precise measurement, and use more general phrasing if consistency is more important than exact quantification.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

a fixed quantity of

Replaces "constant amount" with "fixed quantity", emphasizing the unchanging nature of the quantity.

a stable quantity of

Uses "stable quantity" to highlight the consistent and unchanging nature of the amount.

an unchanging quantity of

Substitutes "constant" with "unchanging", directly focusing on the lack of variation.

a consistent quantity of

Employs "consistent quantity" to stress the uniformity and regularity of the amount.

a uniform quantity of

Uses "uniform quantity" to indicate that the amount is the same throughout.

a regular amount of

Replaces "constant" with "regular", suggesting a predictable and steady quantity.

a set quantity of

Uses "set quantity" to convey that the amount has been pre-determined and will not change.

a prescribed amount of

Substitutes "constant" with "prescribed", implying the amount is dictated by a rule or standard.

an established quantity of

Employs "established quantity" to highlight the amount is well-defined and consistent over time.

a standardized quantity of

Uses "standardized quantity" to indicate that the amount conforms to a specific standard or norm.

FAQs

How do I use "a constant amount of" in a sentence?

Use "a constant amount of" to describe a quantity that remains unchanged. For example, "The experiment requires "a constant amount of" light to ensure accurate results."

What can I say instead of "a constant amount of"?

You can use alternatives like "a fixed quantity of", "a stable quantity of", or "a consistent quantity of" depending on the context.

Is it better to say "constant amount" or "consistent amount"?

While both "constant" and "consistent" can imply an unchanging quantity, "constant" more strongly emphasizes the lack of variation. Use "consistent amount" if the quantity is regularly maintained, but may not be absolutely invariable.

How does "a constant amount of" relate to the concept of a control variable in an experiment?

In experiments, ""a constant amount of"" something is often maintained for a control variable. This ensures that changes in the outcome are due to the manipulated variable, not fluctuations in the control.