Comparison of temperature scales: Fahrenheit, Celsius, and Kelvin, highlighting key points like boiling and freezing points of water and absolute zero.
Three thermometers showing temperature scales in Fahrenheit, Celsius, and Kelvin, with key points labeled: water boils at 212°F, 100°C, and 373 K; water freezes at 32°F, 0°C, and 273 K; and absolute zero at -459°F, -273°C, and 0 K.