-1839 the discovery of photovoltaics was made by French
physicist Edmond Becquerel. -1905 Albert Einstein describes the
photoelectric effect, the principle that photovoltaics are based
upon. EARLY PROGRESS -1921 Albert Einstein wins Nobel Prize for
theory on photoelectric theory
Slide 4
-In the mid 1950s the first practical use of solar cells
emerged when AT&T Labs first developed 6% efficient silicon
solar cells. -By 1960 Hoffman Electronics increased commercial
solar cell efficiencies to as much as 14% and today researchers
have developed cells with more than 20% efficiencies.
Slide 5
-In 1958 the Vanguard I, was launched into space. It was the
first orbiting vehicle to be powered by solar energy. Photovoltaic
silicon solar cells provided the electrical power to the satellite
until 1964 when the system was shut down.
Slide 6
-The energy crisis and oil embargos of the 1970s made many
nations aware of their dependency on controlled non-renewable
energy sources and this fueled exploration of alternative energy
sources. -This included further research into renewable sources
such as solar power, wind power and geothermal power. HOW DID WE
GET TO WHERE WE ARE TODAY?
Slide 7
SO HOW DOES THIS ALL WORK? The Law of Conservation of Energy:
Energy can only change from one form to another. Energy can not be
created or destroyed. Solar Energy comes to the Earth in the form
of heat energy as well as light energy. By the time the energy
reaches the surface it will already have transformed primarily into
light energy.
Slide 8
Forms of Solar Panels
Slide 9
This panel contains pipes that are used to hold the water to be
heated. On one end is an entry point for the cool water to enter.
The other side has an exit point where the heated water departs
from. After the water is pumped inside, the exit point will be
plugged up in order to keep the cool water from escaping. The water
sits there under a transparent panel that is aimed at the sun. The
sunlight penetrates the glass and heats the water until it is ready
to be used. The heated water is then transported out of the panel
and is to be used for cleaning, showers, or heating your home.
Slide 10
PHOTOVOLTAIC PANELS
Slide 11
Photovoltaic panels are used to transform the light energy that
is radiating from the sun into electric energy. The previous slide
displayed a panel that is used to power a vehicle. The photovoltaic
panel does this by attaching a motor to the panel. The motor is
attached to a wire circuit that is fueled by the electrical energy
surging from the face of the panel. The motor transforms the
electric energy into mechanical energy which powers the
vehicle.
Slide 12
HOW IT WORKS IN YOUR HOME
Slide 13
SOLAR FARMS Also known as Photovoltaic Power Stations
Slide 14
INTERESTING NEW IDEAS Grow your money with solar
Slide 15
HOW IT WORKS Mosaic connects investors to high quality solar
projects. See for yourself! joinmosaic.com
Slide 16
WHATS NEXT IN ALTERNATIVE ENERGY? The environment we live in is
so fragile we need a new source of energy
Slide 17
FORMS OF ALTERNATIVE ENERGY -Wind -Hydro -Geothermal -Tidal
-Biomass
Slide 18
ALGAE ENERGY THE FUTURE OF ALTERNATIVE ENERGY
Slide 19
HOW IT WORKS 1.Grow the algae 2.Starve it of nutrients 3.Break
algae open 4.Use solvents to separate the fats from sugars
5.Evaporate solvent 6.Transform fat to biodiesel
