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.
3 weeks (21 days) to 4 weeks is when you can be sure that the hen's eggs are fertilized by the current male that she is breeding with. But, I've always had the idea that if a male is repeatedly breeding a female and the male is fairly young but mature, his sperm will flush out the weaker sperm of the other male. weeks (21 days) to 4 weeks is when you can be sure that the hen's eggs are fertilized by the current male that she is breeding with. But, I've always had the idea that if a male is repeatedly breeding a female and the male is fairly young but mature, his sperm will flush out the weaker sperm of the other male.