Energy resources: Solar energyThis 2-hour free course explored the potential of the sun to provide useable thermonuclear energy, and the technical feasibility of harnessing it.
The Complete Guide About Solar Energy: A Practical Beginners Guide To Solar Panels, Cells and Electricity
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[2 Pack Big 44 LED] InaRock Large Size 44 LED Outdoor Wireless Solar Energy Powered Motion Sensor Light Ponds Decor Accent Lighting with Three Intelligent Modes - Battery Capacity 3000mAh Each
This is 2016 newest upgrade version. Smarter Sensor Modes InaRock Solar Motion Sensor Light now have Three Intelligent Modes for your choice. Mode 1: when in dark night, the light will be dim without people coming near, however become bright if people comes, and the bright light will last 15 seconds until it returns to dim light again. Mode 2: In night, the light will be strong bright when people comes, then 15 seconds later, the light dies automatically. Mode 3: when fade into darkness, the light will keep strong and bright until itself dies. Brighter Lights Last Longer This product has a 3000mAh (2 X 1500mAh) battery and can work continuously over ten hours, which is far more than other similar LED towns in the market Better Sensor Ballhead When received this InaRock Solar LED Light, you will find distinct difference compared to its previous version or similar lights in the market, We update the PIR motion sensor and ray sensor, so it becomes more powerful that it can detect people within 26 feet! Phenomenal Overall Quality To improve the waterproof level, tightly sealed inner loop to its back case, hence, this InaRock light becomes more durable and weatherproof. And we also update the solar panel, thus getting a high-efficient, frosted, anti-scratch solar panel. Package Content: 2 * InaRock Solar Spot 44-LED Lamp 4 * Screw 1 * User Manual Tips: * The battery is Replaceable 18650. battery diameter 18 mm, battery length 66 mm *Please Full Charged the device at first time use(If the LED lights blink repeatedly) *Please Use switch hole to switch Off/1/2/3 switch at first time use