erhellen
to illuminate
To make something brighter with light or to light it up.
EXAMPLE
Der Scheinwerfer erhellte die dunkle Bühne.
The spotlight illuminated the dark stage.
erhellen
to illuminate / clarify
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Meanings
erhellen
to clarify
To make an unclear or complex matter understandable or to shed light on it.
EXAMPLE
Die neuen Dokumente halfen, die Hintergründe der Affäre zu erhellen.
The new documents helped clarify the background to the affair.
sich erhellen
to light up
Refers to a face or expression that suddenly brightens and appears friendlier because of joy or realization.
EXAMPLE
Als sie die gute Nachricht hörte, erhellte sich ihr Gesicht.
When she heard the good news, her face lit up.
Usage tips
Word structure
The verb consists of the adjective 'hell' (bright) and the prefix 'er-'. The prefix 'er-' here means 'to make something bright'. As a verb with 'er-', it is inseparable and forms the perfect tense with 'hat'.
EXAMPLE
Die Kerze hat den kleinen Raum nur schwach erhellt.
The candle only weakly illuminated the small room.
Context clue
You can tell whether the literal or figurative meaning is intended from the object. If it is a place, e.g. 'Raum' (room), the meaning is literal. If it is an abstract concept, e.g. 'Frage' (question) or 'Hintergrund' (background), the meaning is figurative.
EXAMPLE
Ein Blitz erhellte kurz den Nachthimmel.
A flash of lightning briefly illuminated the night sky.
Typical subjects
In the literal meaning, the subjects are often light sources. Typical formulations are 'die Sonne erhellt den Tag' (the sun illuminates the day) or 'eine Lampe erhellt das Zimmer' (a lamp lights up the room).
EXAMPLE
Der volle Mond erhellte die nächtliche Landschaft.
The full moon illuminated the nighttime landscape.
Register: elevated language
In the figurative meaning 'aufklären' (to clarify), 'erhellen' belongs more to elevated written and educated language. It often sounds more elegant or profound.
EXAMPLE
Die Forschungsergebnisse erhellen die komplexen Zusammenhänge.
The research findings clarify the complex connections.
Reflexive use
The reflexive form 'sich erhellen' is used almost exclusively for a person's facial expression. Typical subjects are 'sein Gesicht' (his face), 'ihre Miene' (her expression), or 'sein Blick' (his gaze).
EXAMPLE
Ihre Miene erhellte sich, als sie das unerwartete Kompliment hörte.
Her expression lit up when she heard the unexpected compliment.
Compare with
erhellen vs beleuchten
to illuminate / examine
Beleuchten and erhellen can both refer to making something brighter and visible. Beleuchten focuses more on the target that the light falls on; erhellen emphasizes increasing brightness. Use beleuchten for an object being lit directly and erhellen for a room becoming brighter.
erhellen
Das Morgenlicht erhellt den ganzen Zuschauerraum.
The morning light brightens the entire auditorium.
beleuchten
Ein Scheinwerfer beleuchtet die Bühne.
A spotlight illuminates the stage.
In real life
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