at constant pressure

USAGE SUMMARY

The phrase "at constant pressure" is correct and usable in written English.
It is typically used in scientific or technical contexts to describe a condition where pressure remains unchanged during a process or reaction. Example: "The experiment was conducted at constant pressure to ensure accurate measurements of gas behavior."

✓ Grammatically correct

Science

Academia

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It's still at constant pressure.

Massachusetts Institute of Technology

An existing turbine burns at constant pressure.

MIT Technology Review

Each test was performed at constant pressure.

Procedia Engineering

So d mu / dT at constant pressure is minus s.

Massachusetts Institute of Technology

CP is ΔQ over ΔT at constant pressure.

Yale University

A cluster algorithm for Monte Carlo simulation at constant pressure.

Nature

The other one is CP, which is ΔQ over ΔT at constant pressure.

Yale University

The heat absorption takes place at constant pressure over, but only the part is isothermal.

Massachusetts Institute of Technology

But if we're working at constant pressure then dp is zero.

Massachusetts Institute of Technology

d - a Cool the air at constant pressure back to its initial condition.

Massachusetts Institute of Technology

So d mu gas / dT at constant pressure is minus S gas.

Massachusetts Institute of Technology

Expert writing Tips

Best practice

When describing experimental conditions, explicitly state "at constant pressure" to ensure clarity and reproducibility of results. This is especially important in scientific writing.

Common error

Avoid using "at constant pressure" when describing everyday situations where pressure variations are negligible. This phrase is more appropriate for technical or scientific contexts.

Linguistic Context

The phrase "at constant pressure" functions primarily as an adverbial phrase, modifying a verb or clause to specify the conditions under which an action takes place. As Ludwig examples show, it often appears in descriptions of scientific experiments or thermodynamic processes.

Expression frequency: Very common

Frequent in

Science

57%

Academia

33%

News & Media

3%

Less common in

Encyclopedias

3%

Formal & Business

1%

Social Media

0%

Ludwig's WRAP-UP

The phrase "at constant pressure" is a grammatically correct and frequently used term, particularly in scientific and technical fields. As Ludwig AI confirms, it describes conditions where pressure remains unchanged during a process. It is most commonly found in scientific and academic texts, denoting precise experimental setups. When writing, be sure to use "at constant pressure" in appropriate technical contexts and consider alternatives like "under isobaric conditions" for variety. Remember to maintain clarity and precision in your writing by explicitly stating the pressure conditions when relevant.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

under isobaric conditions

Uses technical terminology for constant pressure.

with pressure held constant

Focuses on the act of keeping the pressure stable.

under steady pressure

Emphasizes the stability of the pressure.

at a fixed pressure

Highlights the unchanging nature of the pressure.

maintaining constant pressure

Focuses on the action of maintaining the pressure.

under constant force per unit area

Breaks down pressure into its fundamental definition.

with invariable pressure

Uses 'invariable' to emphasize no change in pressure.

at a non-varying pressure

Uses 'non-varying' to highlight the lack of fluctuation.

under stable pressure levels

Emphasizes stability and specified levels of pressure.

with pressure unfluctuating

Highlights the absence of any fluctuation in pressure.

FAQs

How is "at constant pressure" used in scientific experiments?

In scientific experiments, "at constant pressure" indicates that the pressure is kept stable throughout the process. This control is crucial for ensuring accurate and reliable results, particularly when studying gases or reactions involving volume changes.

What is the difference between a process "at constant pressure" and one at constant volume?

A process "at constant pressure" allows the volume to change, while a process at constant volume keeps the volume fixed, affecting how energy is transferred and measured. These different conditions influence the thermodynamic properties of the system.

What are some alternative ways to say "at constant pressure"?

Alternatives include "under isobaric conditions", "with pressure held constant", or "under steady pressure", all of which convey the same meaning of maintaining a stable pressure.

Why is it important to specify "at constant pressure" in thermodynamics?

Specifying "at constant pressure" is important in thermodynamics because it defines the conditions under which energy changes occur. Enthalpy, a key thermodynamic property, is specifically defined for processes occurring at constant pressure.