How brightly something glows depends on its temperature to the fourth power — meaning a small temp jump produces a huge brightness jump.

Double the temperature → 16× the radiation.
Triple it → 81×.

That’s why a campfire feels exponentially warmer than warm tea, and why thermal satellite sensors can detect 1°C differences across a landscape — the signal isn’t subtle once you know to look at the right wavelength.

🔬 Science / formula

M_λ = σ · T⁴ — total emitted power per m² from a blackbody.

σ = 5.6697 × 10⁻⁸ W/(m²·K⁴)
T in Kelvin
Real objects: ε · σ · T⁴ (ε = emissivity)
Emitted energy scales with T⁴ — why thermal sensors are so sensitive.

💡

SB = Super Boost. T to the FOURTH — double the temp, 16× the energy. That's why a 300 K Earth emits radiation at all.

emr/stefan-boltzmann