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analyze the effects of dark adaptation when the electricity in a city goes out. how does dark adaptation work when there is no
available light? explain the process

This happens cause the light isn't getting solar energy.

It is an vital source of renewable energy and its technologies are commonly characterized as both passive photo voltaic or energetic photo voltaic relying on how they seize and distribute solar strength or convert it into solar power. Active photo voltaic techniques include the use of photovoltaic systems, targeted solar power and solar water heating to harness the energy. Passive photo voltaic methods encompass orienting a constructing to the Sun, selecting materials with favorable thermal mass or light-dispersing properties, and designing spaces that naturally circulate air.