In talkin' about the infiltration of advertising with my colleagues lately, I've discovered another surprising sore spot for ads: movies.I think we can safely assume that once a soul gets to hell, it will not leave. Therefore, no souls are leaving. As for souls entering hell, let us look at the different religions that exist in the world today. Some of these religions state that if you are not a member of their religion, then you will go to hell. Since there are more than one of these religions and people do not belong to more than one religion, we can project that all people and souls go to hell.
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12 February 2006
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Every once in a while I hear someone say that turning down the thermostat for your furnace (or turning it up for air conditioning) does not save energy. This is sometimes followed by a statement that goes something like, “After all, the furnace needs to work harder to heat a colder house when I turn it back up.”
It amazes me when people who really don’t have any background in science or math make these kinds of statements. While scientists and even the utility company are telling everyone to turn down the thermostat to save money, some of us choose to completely ignore this advice. Perhaps it is time to take a closer look at what is the scientific basis for turning down the thermostat in the first place.
To begin with, let us take a look at how heat escapes from your home. In any closed system, we need to know that energy is conserved. In other words, energy is neither created nor destroyed. Any heat that is lost to the outside must be made up by the furnace. In other words, if there were no heat losses, the furnace would never need to come on.
There are three types of heat movement to discuss: Conduction, infiltration, and radiation. Conduction is where heat flows through solids such as your walls and ceilings. Infiltration is where heated air escapes your home through cracks and open areas such as doors and windows. Radiation is where heat is transferred by hot and glowing objects, such as the sun as it shines on the earth from millions of miles across outer space. We will be looking primarily at conduction and infiltration. Radiation is insignificant for our study.
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