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The 54 pages that link to Thermal radiation, each with the reason it gives.

• Radio astronomyRelated: Thermal radio emission traces objects including planets, dust, and ionized gas.

• Infrared astronomyRelated: Telescope structures and the atmosphere produce thermal backgrounds that infrared instruments must suppress.

• Heat transferRelated: It transfers heat without requiring material contact or a medium.

• Greenhouse effectNarrower topic: Earth’s surface and atmosphere exchange energy through this radiation.

• ConvectionCompared with: Radiation can transfer heat without a moving fluid or physical contact.

• LaserCompared with: Thermal sources emit broad, incoherent light rather than a tightly selected laser beam.

• EctothermyRelated: Sunlight and infrared exchange can warm or cool an ectotherm without contact.

• Black-body radiationNarrower topic: Black-body radiation is the ideal limiting case of thermal radiation.

• Thermal insulationNarrower topic: Reflective insulation reduces radiative heat exchange across gaps.

• Planck's lawNarrower topic: Planck's law quantitatively describes the ideal equilibrium case of thermal radiation.

• Interstellar dustNarrower topic: Absorbed starlight heats grains, which then radiate energy primarily in the infrared.

• Stefan–Boltzmann lawNarrower topic: The law describes the total power carried by this radiation from a black body.

• Thermal energyRelated: It transfers energy without requiring direct contact or a material medium.

• CryogenicsRelated: Radiative heat leaks can overwhelm a cryogenic system unless carefully shielded.

• GreenhouseRelated: Radiative heat exchange helps determine how quickly a greenhouse loses warmth.

• Radioisotope thermoelectric generatorRelated: Radiators dispose of waste heat while maintaining the generator’s hot-to-cold gradient.

• Thermal conductionCompared with: Radiation can transfer heat without matter, unlike conduction.

• Space telescopeRelated: Infrared observatories must control their own heat to avoid overwhelming faint signals.

• EmissivityNarrower topic: Emissivity quantifies how strongly a surface emits this radiation relative to an ideal reference.

• Black hole information paradoxCompared with: Perfectly thermal Hawking radiation cannot by itself carry the detailed information required for unitary evaporation.

• Incandescent light bulbNarrower topic: Visible glow and waste heat are parts of the bulb’s broader thermal-radiation output.

• Yarkovsky effectRelated: The body loses heat through emitted radiation, whose recoil produces the force.

• Kirchhoff's law of thermal radiationNarrower topic: The law concerns the emission and absorption of this radiation.

• Passive coolingRelated: Surfaces gain or lose heat by exchanging infrared radiation with their surroundings.

• Radiative coolingNarrower topic: Radiative cooling is heat loss through this broader form of energy transfer.

• Thermal managementBroader topic: Radiation can remove heat without contact or a moving coolant.

• Thermal resistanceCompared with: Radiative exchange can bypass conductive resistance, especially across gaps.

• RadiometryRelated: Radiometry quantifies the energy transfer carried by thermal emission.

• HiroshimaRelated: The bomb’s heat caused widespread burns and fires across the city.

• NagasakiRelated: The bomb’s heat caused burns and fires across the affected area.

• Poynting–Robertson effectRelated: A warmed grain re-emits absorbed stellar energy, carrying momentum away.

• Space suitRelated: Radiation dominates heat exchange where conduction and convection are limited.

• Coherence lengthCompared with: Its broad spectrum typically produces shorter coherence lengths than narrow-line laser light.

• Atomic bombing of HiroshimaRelated: The intense flash caused severe burns and fires across Hiroshima.

• InsulationRelated: Reflective surfaces can limit radiative heat exchange across gaps.

• Ralph AlpherRelated: The relic radiation Alpher and Herman predicted originated as heat in the early universe.

• Transport phenomenaCompared with: Unlike conduction and convection, radiation transports heat without requiring a material medium.

• Solar furnaceRelated: At high temperatures, the receiver loses substantial energy by radiating heat outward.

• Radiative equilibriumNarrower topic: The emission side of radiative equilibrium is thermal radiation for many physical systems.

• Solid-state lightingCompared with: Incandescent lamps produce light by heating a filament, unlike semiconductor emitters.

• LuminescenceNarrower topic: It is the broader thermal process against which nonthermal luminescence is distinguished.

• Unruh effectRelated: The accelerated observer’s response has a thermal spectrum rather than an arbitrary excitation pattern.

• Gas mantleNarrower topic: The mantle’s temperature determines the spectrum and intensity of its emitted light.

• Astrophysical maserCompared with: Unlike thermal emission, maser radiation can be exceptionally bright and concentrated in narrow lines.

• Cyclotron radiationCompared with: Thermal spectra arise from populations of emitters, unlike the orbit-specific cyclotron mechanism.

• James DewarRelated: Dewar’s reflective flask surfaces reduced heat entering by radiation.

• Aluminium foilRelated: A clean, shiny foil surface reflects much incoming and outgoing thermal radiation.

• MegamaserCompared with: Megamaser lines can be far brighter and more spectrally concentrated than thermal molecular emission.

• BiophotonCompared with: Thermal radiation is a potential background source, unlike photons attributed to biochemical reactions.

• Cryogenics & vacuum technologyRelated: Radiation remains a major heat-transfer path even when vacuum removes gas conduction.