Using standard water heaters, the system designed can be very effective. The hot water system needs to do three things to keep it green: first, they need to deliver hot water to the faucet while wasting the least amount of water waiting for the faucet to arrive; Second, they need to heat the water effectively;
Now, a research team has designed a light bulb that is not only much more energy efficient. In fact, it will also last forever-that is, it is expected to last longer than the device plugged into it. In addition, the lamp can be used for rearProjection TV and general lighting. The trick, at least for the bulb, to have a longer life, is to make sure that the lamp has no electrodes.