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*Pathfinder & Starfinder
The Physics of Darkness (was Shadows of Illumination)
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<blockquote data-quote="Jhyrryl" data-source="post: 988399" data-attributes="member: 6406"><p><strong>So many side effects...</strong></p><p></p><p></p><p>Isn't it? What is it then? Something is being radiated. Something that "counters or dispels any light spell of equal or lower level". Sounds like anti-light to me.</p><p></p><p></p><p>The spell description is pretty clear, but the spell information is incomplete. The spell description clearly states that it "causes the object to radiate darkness out to a 20-foot radius." The problem is that the designers forgot to include an Area entry in the spell, which I'd expect to be similar to the Area entry for <em>silence</em>.</p><p></p><p>Without the area entry, we do not know what kind of radiation darkness falls under. My bet is that darkness is an emanation (see PHB Chapter 10: Casting a Spell; Aiming a Spell). An emanation is a burst with a duration, so if <em>darkness</em> is an emanation, it would throw "shadows" as I described. If it's not an emanation then it would most likely be something that is not defined in the rules: a spread with a duration, which would exhibit the properties I described previously.</p><p></p><p>I note that <em>daylight</em> also has no Area entry, probably because the designers took for granted the behavior of light as so intuitive, that they either consciously felt it didn't require an explanation, or subconsciously forgot that fantasy game mechanics may require such a description. The <em>darkness</em> spell was probably then written as a mirror to <em>daylight</em>, and the omission of mechanically describing <em>darkness</em> energy's behavior, overlooked.</p><p></p><p>In the following, point A is a pebble with <em>darkness</em> cast on it, B is the location of your character, the brown area is a 5-foot thick, 30-foot high, solid-stone wall, and the dashed blue line is a similarly tall <em>wall of force</em>.</p><p></p><p>Image 1 is a case-study for why <em>darkness</em> must be a radiating energy that throws a "shadow". If the <em>darkness</em> energy could penetrate through the material of the wall to enshroud your character at B, then it should be able to penetrate the same material, even if it completely enclosed the source.</p><p></p><p>Image 2 demonstrates the behavior of <em>darkness</em> as an emanation. The wall blocks the path of the energy, only allowing totally unobstructed energy past, thereby allowing your character at B to see normally.</p><p></p><p>Image 3 demonstrates the behavior of <em>darkness</em> as the undefined "spread with a duration". The wall blocks the path of the energy, but it wraps around the obstruction to a distance of 20-feet.</p><p></p><p>Image 4 begs the question, "Are transparent objects also transparent to magical <em>darkness</em>?" IMO they are. But a strong argument can probably be made the other way.</p><p></p><p><img src="http://www.mooville.net/mike/darkness.jpg" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p></blockquote><p></p>
[QUOTE="Jhyrryl, post: 988399, member: 6406"] [b]So many side effects...[/b] Isn't it? What is it then? Something is being radiated. Something that "counters or dispels any light spell of equal or lower level". Sounds like anti-light to me. The spell description is pretty clear, but the spell information is incomplete. The spell description clearly states that it "causes the object to radiate darkness out to a 20-foot radius." The problem is that the designers forgot to include an Area entry in the spell, which I'd expect to be similar to the Area entry for [i]silence[/i]. Without the area entry, we do not know what kind of radiation darkness falls under. My bet is that darkness is an emanation (see PHB Chapter 10: Casting a Spell; Aiming a Spell). An emanation is a burst with a duration, so if [i]darkness[/i] is an emanation, it would throw "shadows" as I described. If it's not an emanation then it would most likely be something that is not defined in the rules: a spread with a duration, which would exhibit the properties I described previously. I note that [i]daylight[/i] also has no Area entry, probably because the designers took for granted the behavior of light as so intuitive, that they either consciously felt it didn't require an explanation, or subconsciously forgot that fantasy game mechanics may require such a description. The [i]darkness[/i] spell was probably then written as a mirror to [i]daylight[/i], and the omission of mechanically describing [i]darkness[/i] energy's behavior, overlooked. In the following, point A is a pebble with [i]darkness[/i] cast on it, B is the location of your character, the brown area is a 5-foot thick, 30-foot high, solid-stone wall, and the dashed blue line is a similarly tall [i]wall of force[/i]. Image 1 is a case-study for why [i]darkness[/i] must be a radiating energy that throws a "shadow". If the [i]darkness[/i] energy could penetrate through the material of the wall to enshroud your character at B, then it should be able to penetrate the same material, even if it completely enclosed the source. Image 2 demonstrates the behavior of [i]darkness[/i] as an emanation. The wall blocks the path of the energy, only allowing totally unobstructed energy past, thereby allowing your character at B to see normally. Image 3 demonstrates the behavior of [i]darkness[/i] as the undefined "spread with a duration". The wall blocks the path of the energy, but it wraps around the obstruction to a distance of 20-feet. Image 4 begs the question, "Are transparent objects also transparent to magical [i]darkness[/i]?" IMO they are. But a strong argument can probably be made the other way. [img]http://www.mooville.net/mike/darkness.jpg[/img] [/QUOTE]
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