PV Gap

Amber Said:

Where in the hell is the switch for my exterior lighting?

We Answered:

You probably really do have a switch for those lights but two conditions must be met for it to work. These lights are motion detector lights so that when you pull in your driveway they turn on. They also have a photo cell in them to keep them off during the day. So if the switch is ON they will turn on when somebody approaches your house at night. You can find the switch by turning it OFF then back ON quickly one time. The light should turn on then, bypassing the photo switch and motion detector for a short time.

Salvador Said:

NEED HELP IN QUESTIONS FOR ENERGY/POWER?

We Answered:

3) none that I know of, I'm sure some people have PV panels at their houses

4) Photovoltaic Energy panels are what you want to know, light from the sun hits semiconducting area of the PV panel (usually Silicon based) and this knocks lose an electron from its shell, which them falls back to its shell releasing some energy, thus light is transformed into electricity, very infefficient...maybe 7%

5) 8 minutes or so

6) For electrical energy most is produced from Coal, next is hydro, next is nuclear with natural gas and oil very small parts. For how long, estimates of coal at 500 years or more, hyrdo is infinite, nuclear is nearly infinite, gas an oil don't really mattter, we could do without them

7) Active solar collector is a PV panel, takes light and makes electrity

8) Passive solar are things like big brick walls that soak up heat in the day and radiate it out at night to heat your house. They all rely on heat produced from solar energy

9) Lots of ways, PV panels, solar water heating, solar home heating....all would reduce need to consume fossil fuels to make electricity

10) Light photons from sun strike object and are absorbed, the energy is transformed into heat. Energy is neither created nor destroyed, only changed form.

Not sure what you mean for the last one, I'm contemplating solar on my next house I'm buying in the next couple of months

Stephen Said:

Wind Turbine For Average Size House?

We Answered:

Wrong category. This is weather, and I think you want Engineering: http://answers.yahoo.com/dir/index;_ylt=…

Pamela Said:

How could I summerize this paragraph?

We Answered:

Geothermal power is power extracted from heat stored in the earth and comes from radioactive decay of minerals and from solar energy absorbed at the surface. It's used to heat up baths and for generating electricity. Geothermal power is cost effective, reliable, and environmentally friendly, but has previously been geographically limited to areas near tectonic plate boundaries.Geothermal wells tend to release greenhouse gases trapped deep within the earth, but these emissions are much lower than those of conventional fossil fuels. As a result, geothermal power has the potential to help mitigate global warming if widely deployed instead of fossil fuels. As of 2004, five countries (El Salvador, Kenya, the Philippines, Iceland, and Costa Rica) generate more than 15% of their electricity from geothermal sources.