Friday, September 19, 2008

Solar Power

We have experimented with solar power with our Technik kit. We used very small solar cells to power the pump and fan. Solar cell technology is developing quickly but not quick enough for some people. The chemicals that make up the solar cell can be expensive and it is important to make them as efficient as possible. Efficiency is a measurement of how much of the Sun's energy that strikes the solar cell is actually changed to electricity.
New solar cells are being developed that are more efficient than ever. They even have thin films that you can roll up. One company is working on a paint that you can spray on a surface to work on a solar cell. The thinner a solar cell, though, the lmore efficient it has to be and the more the material will cost. Its easy to make thicker cheaper cells, but to get good efficiency and thiness requires some expensive chemicals in the cells.
The good news is that as more and more people make solar cells the cost of making them come down. Improved methods of manufacture and market competition cause prices to go lower. The lower the prices the more people buy solar cells. The more people buy solar cells the more companies will make.

Think about places where people could put solar cells.What do people use solar cells for in real life? What limitations do solar cells have?

12 comments:

Anonymous said...

people use them 4 energy 4 there house

Anonymous said...

soalar power is ok but i cant get the first one to work its hard bit next week i might get it to work or ot but i will work hard to fix.

Anonymous said...

They are used to power houses.they are sometimes usedin cars.They need sunlight.They can not work in the dark.

Anonymous said...

I think that the solar cell tachnonlory is developing quickly but not quickly enough for some people.

Anonymous said...

They use solar cells for light and It would be more funif we did that again

Anonymous said...

Solar power is used for energy it can be used to create electricity.
The limitations of solar power are that it can only create energy during the day. Buildings are powered by solar energy. The solar panels can be broken easily.

Anonymous said...

i like the solar power cuss you dont use gas you use power from the sun

Anonymous said...

i realy liked the solare powerd because it was cool wene we made the oil taker uoter

Anonymous said...

They use solar cells for light.the solar cells use power so they can work. it was fun. it would be cool if we did that again.

Anonymous said...

i think the solar thing was fun i really like seeing our stuff work!!!!!! it was cool i hope we get to mess with solar pannels more often.... until then....."THUNDERCATS AGO!!!!" :]

Anonymous said...

People use solar cells power. Solar cells can only work where there is powerful light

Anonymous said...

they need solor power cells 4 thing such as street lights