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Fse-emissivity-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)
Summary
Three surfaces at the same temperature. A black body (ε = 1) absorbs all incoming radiation and emits the most; a grey surface emits a fraction ε; a polished metal reflects most incoming radiation and emits little. Based on Van Rossum (2027), §5.4, and Tien et al. (2002), pp. 1-74–1-75.
Original vector illustration for Emissivity, level 2 Intermediate.
- Source basis: Van Rossum (2027), §5.4 (black body absorbs all, reflects nothing, emits maximum; emissivity table: paint 0.9, polished aluminium 0.04); Tien et al. (2002), p. 1-74 (α + ρ + τ = 1) and p. 1-75 (Kirchhoff's law)
- Alt text: Black body, painted surface and polished metal at one temperature: emission arrows shrink with emissivity; the metal reflects most radiation.
Licensing
New drawing by Fire Safety Academy. © Fire Safety Academy.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:54, 2 November 2026 | | 900 × 600 (8 KB) | Lisa (talk | contribs) | Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity |
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