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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
lamp was on
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "lamp was on" is correct and usable in written English.
It can be used to describe a situation where a lamp is illuminated or functioning. Example: "When I entered the room, I noticed that the lamp was on, casting a warm glow across the space."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
5 human-written examples
An older colleague told me that once he told someone his fog lamp was on and the guy shot at him with a Glock.
News & Media
The table lamp was on in daylight, and there were cups on top of coasters.
News & Media
The presence was still detected, the outdoor luminosity was equal to 500 lux, the shutter was closed and the lamp was on.
Lighting power had an obvious negligible degree of influence in final consumption, because of the small periods of time during which the lamp was on (it just occurred when there were people inside).
The accuracy of the Raman line shifts, calibrated by Neon spectral calibration lamp, was on the order of 0.5 cm–1.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
Casings will inevitably heat up when the lamp is on and might cause burns when you touch them.
Wiki
The lamp is on.
News & Media
Inside the house, a floor lamp is on its side.
News & Media
A bright new brass lamp is on the side of the doorway, and some woodwork has been stripped -- perhaps a decade ago.
News & Media
Luceplan's Berenice lamp is on sale at Lee's Studio during May (the table lamp is $259 ,originally $339; the floor lamp is $279, originally $369220220 West 57th Street (Broadway), (212) 581-4400, leesstudio.com.
News & Media
For example, you can look and find that your desk lamp is on.
News & Media
Expert writing Tips
Best practice
Use "lamp was on" to clearly indicate that a lamp was illuminated at a specific time, especially when contrasting with a previous or expected state (e.g., "The room was dark until the lamp was on").
Common error
Avoid using "lamp was on" when you mean to describe the current state. If the lamp is currently lit, use "lamp is on" instead. "Lamp was on" implies a past state.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "lamp was on" functions as a descriptive statement, indicating the state of a lamp at a specific point in the past. Ludwig confirms that the phrase is commonly used and grammatically correct.
Frequent in
News & Media
40%
Science
30%
Wiki
20%
Less common in
Encyclopedias
5%
Formal & Business
3%
Academia
2%
Ludwig's WRAP-UP
The phrase "lamp was on" is a grammatically sound and frequently used expression to describe the state of a lamp being illuminated in the past. As confirmed by Ludwig, this simple phrase is appropriate for various contexts, ranging from casual conversation to more formal writing. It serves the purpose of setting a scene or providing context by indicating the presence of light from a lamp at a specific time. While alternatives like "lamp was lit" or "lamp was illuminated" exist, "lamp was on" provides a straightforward and clear way to convey this information. Remember to use "lamp is on" for current situations and "lamp was on" to define something in the past.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
lamp was lit
Replaces "on" with "lit", focusing on the illumination aspect.
lamp was illuminated
Uses a more formal word, "illuminated", to describe the state of being lit.
lamp was alight
Synonymous replacement of "on" using a more formal tone.
light was shining
Shifts the focus from the lamp itself to the light it emits.
lamp was activated
Focuses on the action of turning the lamp on rather than just its state.
lamp was glowing
Highlights the visual effect of the light being emitted.
lamp was functioning
Highlights that the lamp is working properly and emitting light.
lamp was in operation
Similar to 'functioning' but slightly more formal.
lamp was running
Implies continuous operation of the lamp.
lamp had power
Emphasizes the electrical supply to the lamp.
FAQs
How can I use "lamp was on" in a sentence?
Use "lamp was on" to describe a situation in the past when a lamp was illuminated. For example: "I noticed that the "lamp was on" when I got home."
What are some alternatives to saying "lamp was on"?
Alternatives include "lamp was lit", "lamp was illuminated", or "light was shining" depending on the specific nuance you want to convey.
Is it correct to say "the lamp was on"?
Yes, it is grammatically correct to say "the lamp was on" to indicate that the lamp was illuminated in the past.
What's the difference between saying "the lamp is on" and "the lamp was on"?
"The lamp is on" indicates a present state, while "the lamp was on" refers to a state in the past. For example: "The lamp is on now," versus "The lamp was on earlier."
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested