http://www.brighthub.com/search/searchresults.aspx?u=3084&o=DateDescending&a=275Posts by Dr. Crystal Cooperen-UShttp://www.brighthub.com/engineering/mechanical/articles/54035.aspxThu, 29 Oct 2009 05:04:43 GMTb133e95a-c263-4882-8f2a-b24547eff78e:54035coopercdHeat conduction is one of the three modes of heat transfer. In 1822, a French physicist published a treatise giving a complete theory and mathematical model. Who was he, and which mathematical formulation is he most famously known for? Introduction Heat conduction is transfer of heat from a warmer to a colder object by direct contact. A famous ...http://www.brighthub.com/engineering/mechanical/articles/50771.aspxTue, 29 Sep 2009 04:00:32 GMTb133e95a-c263-4882-8f2a-b24547eff78e:50771coopercdIs there any way to prevent western conifer seed bugs, aka stink bugs, from being such unwanted house guests? And what is their connection to thermal radiation? Introduction Fall approaches in the Northern part of the United States, and in Canada. Many view it with pleasure - the changing leaves, the crispness of the air, the start of a new...http://www.brighthub.com/engineering/mechanical/articles/50769.aspxTue, 29 Sep 2009 03:58:23 GMTb133e95a-c263-4882-8f2a-b24547eff78e:50769coopercdHow does the ability of western conifer seed bugs to find their favorite food help to 
demonstrate an application of thermal radiation? Introduction We have seen that Western conifer seed bugs are pests, entering unwanted into buildings whenever it begins to get cold. Though they aren't dangerous, they are annoying. Western conifer seed bug...http://www.brighthub.com/engineering/mechanical/articles/49311.aspxFri, 18 Sep 2009 09:58:02 GMTb133e95a-c263-4882-8f2a-b24547eff78e:49311coopercdWhat are some simple heat transfer experiments that can be done to demonstrate convection and radiation? Introduction In a previous article , we discussed some simple experiments that can be done to demonstrate heat conduction. Here, we continue our investigation into heat transfer experiments, but with a focus on convection and radiation. Conv...http://www.brighthub.com/engineering/mechanical/articles/48503.aspxWed, 09 Sep 2009 12:29:46 GMTb133e95a-c263-4882-8f2a-b24547eff78e:48503coopercdIn this article, we discuss some examples of heat transfer mechanisms that occur simultaneously, and also simple heat conduction experiments you can do at home. Introduction We have previously seen that the main methods for heat transfer are conduction, convection, and radiation. Though these topics were treated singly, it is not unusual for all th...http://www.brighthub.com/engineering/electrical/articles/47625.aspxMon, 31 Aug 2009 03:41:15 GMTb133e95a-c263-4882-8f2a-b24547eff78e:47625coopercdA potentiometer is an electrical component with a variable resistance. This article discusses how they work, and how to use a multimeter to read one. Introduction In electrical engineering parlance, the term "potentiometer" is used in either one of two ways. It may refer to an instrument that measures an unknown emf or voltage by comparin...http://www.brighthub.com/engineering/electrical/articles/47672.aspxMon, 31 Aug 2009 10:59:50 GMTb133e95a-c263-4882-8f2a-b24547eff78e:47672coopercdA zener diode is a silicon diode the is optimized to conduct when it is reverse-biased. This article presents ways on how to identify one. Introduction A Zener diode is a silicon diode that is optimized to work in what is known as the breakdown region. They conduct when they are reverse-biased unlike normal diodes, which will self-destruct. Their b...http://www.brighthub.com/engineering/mechanical/articles/47635.aspxMon, 31 Aug 2009 04:18:23 GMTb133e95a-c263-4882-8f2a-b24547eff78e:47635coopercdWhy do you feel cooler if you white clothes instead of black ones on a hot sunny day? And why is the inside of a thermos bottle shiny instead of dull? Introduction Radiation is heat transfer via the use of electromagnetic waves. It differs from heat conduction and convection in that matter is not used to directly transfer the thermal energy...http://www.brighthub.com/engineering/mechanical/articles/47488.aspxSun, 30 Aug 2009 07:47:21 GMTb133e95a-c263-4882-8f2a-b24547eff78e:47488coopercdBy what process is heat transferred to the boiling water you use to steam vegetables such as a corn cob, or to your room when it is heated by a radiator? Introduction When I was a brand new research associate at the University of Maryland, I rented an apartment not far from campus. The apartment was carpeted, and had plenty of space. It had one...http://www.brighthub.com/engineering/mechanical/articles/47239.aspxFri, 28 Aug 2009 04:27:43 GMTb133e95a-c263-4882-8f2a-b24547eff78e:47239coopercdHow do your clothes keep you warm on a cold day? And why do rugs feel warmer to your feet than a tile floor that is at the same temperature? Could it be heat conduction at work? A Simple Basic Equation A simple equation to measure heat conduction is derived by considering a uniform slab of material with a thermal conductivity k, an area...