energy conservation

Have you ever wondered why there is an on/off switch on solar lights? Surely, they get their power from the sun, so why do we need to control their operation at all? These tiny devices may seem insignificant, but their existence begs a question regarding their functionality. A closer look at solar lights may reveal a peculiar design that will require our attention. So, why do … [Read more...] about Why is There an On/off Switch on Solar Lights