The Temperatureslider controls the heat of the metal filamentinside the light. Scientists use the Kelvin scaleto measure the temperature of very hot objects. It is like the Celsius scale except 0 K (absolute zero) is the coldest anything can ever be. Slowly move the Temperatureslider all the way to the right. What happens? the color changes. The light energy emitted by the flashlight is called radiation

The after  the light changes to more energetic Violet light

Explanation:

This type of thermometer is called a pyrometer, the light from the bulb is facing the light received from the hot object by moving the knob to the right for more current through the filament and the light changes towards more energy, violet. When the intensity from the hot source and the deserter are the same, the radiation is absorbed and the device is black, at this time the temperature is read.

The after  the light changes to more energetic Violet light

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