was observed that when vs was observed that once

Both phrases are correct, but they are used in different contexts. 'Was observed that when' is used to introduce a general observation or a repeated occurrence, while 'was observed that once' is used to introduce a specific observation or a single occurrence.

Last updated: March 20, 2024 • 653 views

was observed that when

This phrase is correct and commonly used to introduce a general observation or a repeated occurrence.

This phrase is used to introduce a general observation or a repeated occurrence. It is followed by a description of what was observed.

Examples:

It was observed that when the temperature dropped, the plants wilted.
It was observed that when she spoke, everyone listened attentively.

Show examples from the web [+]

It was observed that when a task of low difficulty (a task with an obvious solution) was presented to a subject, the subject's motivation to perform the task correctly ...
was observed that when lymphoid cells from histoincompatible animals were mixed together, a proliferative response (called a mixed lymphocyte reaction [10 ...
The crystals were grown a number of times by the same process using different crucibles and it was observed that when the GROWTH OF BARIUM SULPHATE ...
RESULTS: It was observed that when the caval pressure was less than 6 mmHg the operating field was almost bloodless (mean blood loss 363 (range 305-465) ...

Alternatives:

It was noted that when
It was seen that when
It was found that when
It was reported that when
It was discovered that when

was observed that once

This phrase is correct and commonly used to introduce a specific observation or a single occurrence.

This phrase is used to introduce a specific observation or a single occurrence. It is followed by a description of what was observed.

Examples:

It was observed that once the experiment was completed, the results were inconclusive.
It was observed that once the bird landed on the branch, it started singing.

Show examples from the web [+]

In Study 3, it was observed that once the appropriate behavior increased during self-evaluation with prior verbalization, it also maintained during the phase of ...
was observed that once fixation starts beyond FTL, it continues even after P concentration drops below FTL, which has been explained on the basis of ...
(2) It was observed that once the threshold pressure for vibration is reached ( about 0.2 kPa), the vibration amplitude of the reed tip quickly rises to a large value of ...
From anoxic nitrate utilization tests, it was observed that once the readily biodegradable COD (especially VFAs) was depleted, the denitrification rate reduced ...

Alternatives:

It was noted that once
It was seen that once
It was found that once
It was reported that once
It was discovered that once

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was observed that when vs was observed that once