dudududud

Do you hear me,I'm talking to you
Across the water across the deep blue ocean
Under the open sky,
oh my, baby I'm trying

Boy I hear you in my dreams
I feel your whisper across the sea
I keep you with me in my heart
You make it easier when life gets hard

lucky I'm in love with my best friend
Lucky to have been where I have been
Lucky to be coming home again
Ooohh ooooh oooh oooh ooh ooh ooh ooh

They don't know how long it takes
Waiting for a love like this
Every time we say goodbye
I wish we had one more kiss
I'll wait for you I promise you, I will

I'm lucky I'm in love with my best friend
Lucky to have been where I have been
Lucky to be coming home again
Lucky we're in love every way
Lucky to have stayed where we have stay

Photovoltaic Cells: Converting Photons to Electrons

T­he solar cells that you see on calculators and satellites are photovoltaic cells. Photovoltaic, as the word implies (photo, light, voltaic ), convert sunlight directly into electricity. Once used almost exclusively in space, photovoltaic are used more and more in less exotic ways.

Photovoltaic (PV) cells are made of special materials called semiconductors such as silicon, which is currently the most commonly used. Basically, when light strikes the cell, a certain portion of it is absorbed within the semiconductor material. This means that the energy of the absorbed light is transferred to the semiconductor. The energy knocks electrons loose, allowing them to flow freely. PV cells also all have one or more electric fields that act to force electrons freed by light absorption to flow in a certain direction. This flow of electrons is a current, and by placing metal contacts on the top and bottom of the PV cell, we can draw that current off to use externally. For example, the current can power a calculator. This current, together with the cell's voltage (which is a result of its built-in electric field or fields), defines the power (or wattage) that the solar cell can produce.

That's the basic process, but there's really much more to it. Let's take a deeper look into one example of a PV cell: the single-crystal silicon cell.