The only light in a room comes from the display of a digital clock. At what time is the room the darkest? At what time is it the brightest?
To understand when the room is the darkest and brightest based on the display of a digital clock, we need to know how the clock operates. Most digital clocks use LED (light-emitting diode) technology, which emits light when an electrical current passes through it. Let's assume this is the case for the digital clock in question.
The intensity of the clock's display is typically consistent throughout the day, as long as it is functioning correctly. Therefore, the room will not be significantly darker or brighter based on the time displayed on the clock.
However, if the clock has an adjustable brightness setting, the brightness may vary throughout the day. In this case, the darkest time would be when the clock's brightness is set at its lowest level, typically during the night when ambient lighting is diminished. The brightest time would be when the clock's brightness is set at its highest level, which typically occurs during the day or when the room is well-lit.
To determine the darkest and brightest times more accurately, you would need to consult the clock's instruction manual or adjust the clock's brightness settings to observe the differences in lighting conditions throughout the day.