Black Body Radiation: Why Hot Things Glow | GCSE Physics

Black body radiation for GCSE separate Physics, animated: why every object emits and absorbs infrared at any temperature, how the intensity and spread of wavelengths change as something heats up (a cooker ring going from dark to red to orange), what a perfect black body is and why it's the best emitter. For Higher tier: why a constant temperature means absorbing and emitting at the same rate, and how radiation sets Earth's temperature. Finishes with an exam-style explanation question answered point by point. Covers: AQA 4.6.3 · Edexcel Topic 5 (5.15P–5.19P) · OCR Gateway P8.3 (separate Physics only; the balance and Earth's temperature parts are Higher tier). 0:00 Intro 0:08 Hook 0:59 Everything emits and absorbs 1:41 The spread of wavelengths 3:00 A perfect black body 3:47 Higher: constant temperature 4:25 Higher: Earth's temperature 5:21 Exam-style question 6:17 Summary Narrated with an AI voice. Worked Example is not affiliated with or endorsed by AQA, OCR or Pearson Edexcel. Exam board names are used only to show which specifications a video covers.