Electric stoves often use the arbitrary 1-9 scale (sometimes labeled as Low, Medium, and High) instead of Celsius because the scale provides a simple and standardized way for users to control the heat output without needing to know specific temperature values. Here are some reasons why this approach is commonly used:
User-friendliness: The 1-9 scale is straightforward and intuitive for users. Most people are familiar with the concept of low, medium, and high heat settings, making it easy to adjust the stove's temperature to their cooking needs without having to understand precise temperature values.
Variability of cookware: Different cookware materials and thicknesses can affect how quickly they respond to temperature changes. Using a numerical scale allows users to adapt to their specific cookware and get consistent results regardless of the pot or pan they are using.
Temperature variation in electric stoves: Electric stoves don't maintain a constant temperature, as they cycle on and off to maintain the desired heat level. This can lead to fluctuations in the actual temperature. By using a general scale, users can focus on relative settings rather than precise temperature values.
Manufacturing variations: Electric stoves can have slight temperature variations due to manufacturing differences and age. The 1-9 scale helps to accommodate these variations and make the cooking experience more consistent across different stove models.
It's important to note that some modern electric stoves do come with more precise temperature controls, usually indicated in degrees Celsius or Fahrenheit. These stoves are often equipped with advanced electronics and sensors to maintain a more accurate and stable temperature. However, many traditional electric stoves still rely on the 1-9 scale due to its simplicity and ease of use for the average consumer.