a spectra of

USAGE SUMMARY

The phrase "a spectra of" is not correct in English; it should be "a spectrum of." You can use "a spectrum of" when referring to a range or variety of related things, often in contexts like science, art, or opinions.
Example: "The exhibition showcased a spectrum of artistic styles, from classical to contemporary."

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

14 human-written examples

This problem is more aggravated if it is desired to determine these compounds in their co-formulated preparations Figure 2 Fluorescence spectra of: (A, A', A") spectra of MTP (0.5 μg/mL) in distilled water.

Chemistry Central Journal

(a) Spectra of C1 obtained by π/2 readout pulses when the system is in the labelled pseudo-pure state ρs=00σz0000 (red) and reference state (blue), respectively, where is the identity matrix, 0≡|0 0| and the qubit order is given by MH1H2C1C2C3C4.

Nature

(a) Spectra of the real part (μ'eff).

Nanoscale Research Letters

(A) Spectra of ZnS-chitosan conjugates synthesised at different pH.

Nanoscale Research Letters

a Spectra of fluid at temperatures indicated (corresponding pressures can be found in Table 1).

Progress in Earth and Planetary Science

Fig. 2 Absorption (a) spectra of CdTe and series of Cd1-xMnxTe-alloyed QDs with different content of Mn2+ ions.

Nanoscale Research Letters

Human-verified similar examples from authoritative sources

Similar Expressions

46 human-written examples

The wines displayed a spectrum of styles.

The New York Times

But there is a spectrum of rejectionists.

The Economist

"There are a spectrum of sexual behaviours.

The Guardian

People have a spectrum of choices.

The New York Times

MOSTLY GLASS "A Spectrum of Glass Art".

The New York Times

Expert writing Tips

Best practice

Always use "spectrum" (singular) instead of "spectra" when referring to a range or collection of something. "Spectra" is the plural of "spectrum" and is typically used in technical or scientific contexts when discussing multiple individual spectra (e.g. multiple graphs of light wavelengths).

Common error

Avoid using "spectra" when you mean "spectrum". Remember that "spectra" is the plural form, appropriate only when discussing multiple sets of data or observations, like multiple light spectra from different stars. In most general contexts, "spectrum" is the correct choice.

Linguistic Context

The phrase is primarily intended to function as a noun phrase, serving as a determiner that introduces a variety or range of items or concepts. Ludwig AI indicates that the correct form is "a spectrum of."

Expression frequency: Uncommon

Frequent in

Science

41%

News & Media

40%

Academia

12%

Less common in

Formal & Business

3%

Reference

2%

Encyclopedias

2%

Ludwig's WRAP-UP

The phrase "a spectra of" is generally considered grammatically incorrect; the correct form is "a spectrum of". This phrase is used to indicate a range or variety of something. While "spectra" is the plural of "spectrum", it is misused in this context. Ludwig AI confirms this grammatical distinction.

Usage spans diverse contexts, including science, news media, and academia, but the incorrect grammar lowers the overall quality. Alternatives like "a range of" or "a variety of" can also be used. Remember that "spectra" is suitable when discussing multiple individual spectra, often in scientific data analysis, not when referring to a general assortment or range.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

a spectrum of

Corrects the grammatical error from "spectra" (plural) to "spectrum" (singular), maintaining the core meaning of a range or variety.

a range of

Provides a direct synonym for "spectrum", indicating a series or variety of something.

a variety of

Emphasizes the diverse nature of the items or concepts being described.

an array of

Suggests a structured or organized collection of items.

a collection of

Highlights the gathering or assembling of different elements.

a selection of

Implies a curated or chosen group of items.

a series of

Indicates a sequence or succession of related items.

a diverse set of

Stresses the heterogeneity and variety within the group.

an assortment of

Suggests a mixed or varied collection.

a gradation of

Implies a gradual transition or series of steps within the range.

FAQs

What is the correct way to say "a range of"?

The correct way to say "a range of" using the word "spectrum" is "a spectrum of". The word "spectra" is the plural of "spectrum" and is often used incorrectly in this context.

When should I use "spectrum" versus "spectra"?

"Spectrum" is singular and refers to a range or scale, like "a spectrum of opinions". "Spectra" is plural and refers to multiple sets of data, often in scientific contexts, such as "analyzing light spectra".

What can I say instead of "a spectra of"?

Since "a spectra of" is grammatically incorrect, you can use "a spectrum of" to indicate a range or variety. Other alternatives include "a range of" or "a variety of".

Is "spectra" ever correct in a sentence?

Yes, "spectra" is correct when referring to multiple instances of spectrum, especially in scientific contexts. For example, "The scientist analyzed the emission spectra of several different gases".