PV Gap

Wendy Said:

I invented a solar powered miner's lamp but it isn't selling too well. What should I do?

We Answered:

Tell the customers it`s also a wind-up model....!

lol

Cecil Said:

if you have a solar powered object can it run by a lamp instead of the sun?

We Answered:

Yes, a bright artificial light can power through a solar cell some device.

However, don't fall into the trap of believing that there is no loss of energy in this system.

I once judged a science fair where the entrant had an artificial light power a photoelectric panel which drove a fan. I asked the person if that fan could generate electricity (like a wind generator) to run the light source.... and the answer I got was "yes". Of course it couldn't... it would be a perpetual motion machine.... and would violate the second law of thermodynamics. There is always a loss of energy in these systems..... and the wind device could never generate enough energy to run the light that initially fueled it.

Jeffrey Said:

Solar Powered Indoor Plant Lamp?

We Answered:

You can use Compact fluorescent light bulb. It have more light than full-size fluorescent grow lights. They are also a popular choice for home gardeners because they are inexpensive, available in many common stores, and can be used in regular light sockets. They are especially good for shelf gardening because their low heat allows you to place lights on shelves that are stacked on top of each other. Smaller plants and seedlings can thrive in a well-designed indoor garden lit with fluorescent grow lights.

Solar powered indoor lighting lamp is a great way to reduce electrical bills while saving energy. Because it relies on the sun for power, this lighting lamp doesn’t create greenhouse gas emissions nor contribute to the depletion of the natural resources of the planet.