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Research draft

extinction

vr.tr.extinction-q943247 · ACT.PRC

Let an agent explain extinction in the optical sense, relay how absorption and scattering dim light and the case of interstellar extinction from physics and astronomy sources, and distinguish it clearly from biological extinction and from simple absorption alone.

Thing Registry Activities and processes

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent explain extinction in the optical sense, relay how absorption and scattering dim light and the case of interstellar extinction from physics and astronomy sources, and distinguish it clearly from biological extinction and from simple absorption alone.

In physics and astronomy, extinction is the reduction in the intensity of light or other radiation as it passes through a medium, caused by absorption and scattering; the registry alias names interstellar extinction, the dimming and reddening of starlight by dust and gas in space. This is the optical sense of extinction, a form of attenuation, distinct from the biological extinction of species.

What it is for: Describing the dimming of light through a medium.

It can be explain the optical sense; relay absorption and scattering; relay interstellar extinction; distinguish it from species extinction.

Distinguishing features

Dims light

Absorption plus scattering

Seen in astronomy

Not species extinction

What it looks like

Not a visible object; observed as dimmed and reddened light after passing through a medium.

Physical character

effect: reduces light intensity note

causes: absorption and scattering list

registry parent: attenuation note

How it is recognised

Dimming of light by absorption and scattering

Interstellar extinction of starlight

Biological extinction is the loss of a species; absorption alone is only part of extinction

Related models

is a kind of - in registry terms

attenuation

is contrasted with -

species extinction

includes -

absorption

includes -

scattering

In practice

Families and kinds

interstellar extinction

atmospheric extinction

Standards and regulation

Physical and astronomical conventions

Failure modes and hazards

Confusing with biological extinction

Reducing extinction to absorption only

Mixing atmospheric and interstellar cases

Also called

interstellar extinction

Where this came from

wikidata · CC0 1.0

Also registered as vr.tr.extinction-act

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Understand What optical extinction is.

Definition.

Definition

Definition.

Definition

Definition.

  1. What is extinction in optics, and how does it differ from biological extinction? definition
  2. Which sense is meant, optical or biological? boundary

Cases

Cases.

Cases

Cases.

  1. How do interstellar and atmospheric extinction differ? definition
  2. Which entry fits the specific case? action
Mechanism Mechanism.

Sources.

Absorption

Absorption.

Absorption

Absorption.

  1. How does absorption contribute to extinction? provenance
  2. Which references are standard? provenance

Scattering

Scattering.

Scattering

Scattering.

  1. How does scattering contribute to extinction and reddening? provenance
  2. Which sources are cited? provenance
Astronomy Astronomy.

Sources.

Interstellar

Interstellar extinction.

Interstellar

Interstellar.

  1. How does dust dim and redden starlight? provenance
  2. How is extinction measured? measurement

Correction

Correction.

Correction

Correction.

  1. How do astronomers correct observations for extinction? provenance
  2. Which sources are cited? provenance
Context Context.

Context.

Attenuation

Attenuation.

Attenuation

Attenuation.

  1. How does extinction relate to attenuation generally? provenance
  2. Which entry fits attenuation? action

Senses

Other senses.

Senses

Senses.

  1. How does optical extinction differ from the biological sense? provenance
  2. Is the sense correctly identified? boundary

What the second pass must settle

  • Should interstellar and atmospheric cases be separate entries?
  • How should the biological sense be signposted?
  • How should reddening be explained?