MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Measuring heat loss. Mercury thermometer clamped in position with its bulb in warm liquid contained in cup made from expanded polystyrene. The expanded polystyrene, a foam form of this plastic, is a good insulator. The degree to which it retains the heat of the liquid can be quantified by measuring the rate at which the temperature decreases.
Model release not required. Property release not required.