Thermometer Diagram - Understanding Temperature Measurement in °C #287522 (License: Personal Use)

This diagram shows a vertical glass thermometer with a bulb at the base containing a dark liquid (representing mercury or alcohol), rising through a narrow tube. The scale is marked in degrees Celsius, with red tick marks above 0°C denoting warmer temperatures and blue ticks below 0°C indicating colder conditions. A black line highlights a specific reading near the freezing point of water.

Used in educational materials, science websites, weather explanations, and health-related content to illustrate temperature measurement principles; matches user intent for learning basic thermometry or interpreting temperature scales.