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The spell sickening radiance states:

Dim, greenish light spreads within a 30-foot-radius sphere centered on a point you choose within range.

Wall of force states:

An invisible wall of force springs into existence at a point you choose within range.

and

Nothing can physically pass through the wall.

As the wall is "invisible", that means it is permeable to light. So the light of sickening radiance - and thus the effect of the spell - should be allowed to pass through. But the wall also stops anything from physically passing through it; would that apply to the photons of the sickening radiance (if, indeed, "light" in D&D terms is made of photons)? If not, why can the visible spectrum of light pass but the damaging, magic light of "sickening radiance" not?

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