Current produced by thermocouples. My understanding is that the thermocouple voltage is strictly a function of the temperature. Apparently this is called the Seebeck Voltage. Like any voltage source there is an internal resistance associated with it due to real world effects.
HIV/AIDS. Condoms for HIV prevention. Condoms, when used correctly and consistently, are highly effective in preventing HIV and other sexually transmitted infections (STIs). A large body of scientific evidence shows that male latex condoms have an 80% or greater protective effect against the sexual transmission of HIV and other STIs.
Later, if you decide to have children, you might pass the disease on to them. If you would like more information about condoms and how to prevent sexually transmitted diseases, talk with your doctor or call: The National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention. It's open 24 hours a day. condom is especially important when an uninfected pregnant woman has sex, because it can also help protect her and her unborn child from a sexually transmitted disease. Condoms are not 100% safe, but if used properly, will reduce the risk of sexually transmitted diseases, including AIDS.