In this articleÂ­, we will examine solar cells to learn how they convert the sun's energy directly into electricity. In the process, you will learn why we're getting closer to using the sun's energy on a daily basis, and why we still have more research to Â­do before the process becomes cost-effective.n this articleÂ­, we will examine solar cells to learn how they convert the sun's energy directly into electricity. In the process, you will learn why we're getting closer to using the sun's energy on a daily basis, and why we still have more research to Â­do before the process becomes cost-effective.
How long does a hen stay fertile after the rooster is gone?   A hen stays fertile for about 2-2 and a half weeks after the rooster is gone. The sperm stays in her for about that long, sometimes even up to 3 weeks. Started career as professional chef then a district sales manager for a wine & spirits company.
There, the sperm is nourished and released over several days. So the rooster does not have to mate with the hen each time she lays an egg to produce a fertile egg. Fertility only remains high for about 10 days before another mating is needed to increase fertility of the eggs laid.his is why eggs are fertilized. If you do not want your eggs fertilized, all you need to do is pull out the rooster, or roosters if there are more than one. This will cause the chickens to lya unfertilized eggs. When an egg is fertile it means it was in the beginning stage of hosting a baby.