http://www.sciencerat.com/ Science Rat en Wed, 16 May 2012 09:34:00 GMT Wed, 16 May 2012 09:34:00 GMT info@sciencerat.com info@sciencerat.com http://www.sciencerat.com/enthalpy/ Enthalpy is the heat energy exchange that takes place during chemical reactions. It has the symbol H and is measured in kJ/mol, or kilojoules per mole. The energy exchanged with... http://www.sciencerat.com/enthalpy/#comments http://www.sciencerat.com/enthalpy/ Wed, 16 May 2012 09:34:00 GMT http://www.sciencerat.com/bacterial-artificial-chromosome/ A bacterial artificial chromosome (BAC) is one of a class of tools, called vectors, that microbiologists use to insert genes into a bacterium -- usually e coli. Inserting genes alters... http://www.sciencerat.com/bacterial-artificial-chromosome/#comments http://www.sciencerat.com/bacterial-artificial-chromosome/ Wed, 25 Apr 2012 09:14:00 GMT http://www.sciencerat.com/different-types-of-fingerprint-patterns/ There are three types of fingerprint patterns within what is known as the Henry Classification System, a method of differentiating fingerprint types that has endured for more than 100 years... http://www.sciencerat.com/different-types-of-fingerprint-patterns/#comments http://www.sciencerat.com/different-types-of-fingerprint-patterns/ Fri, 13 Apr 2012 10:38:00 GMT http://www.sciencerat.com/factors-determine-the-damage-of-an-asteroid-impact/ The most important factor determining the damage of an asteroid impact is the energy it releases upon impact. This is calculated by multiplying half the asteroid's mass by the square... http://www.sciencerat.com/factors-determine-the-damage-of-an-asteroid-impact/#comments http://www.sciencerat.com/factors-determine-the-damage-of-an-asteroid-impact/ Mon, 26 Mar 2012 00:18:00 GMT http://www.sciencerat.com/salt-and-sugar-preserve-food/ Food is spoilt when certain microorganisms begin to reproduce on and digest its surface, releasing harmful toxins as byproducts of their metabolic processes. Sometimes the microorganisms themselves -- mostly bacteria... http://www.sciencerat.com/salt-and-sugar-preserve-food/#comments http://www.sciencerat.com/salt-and-sugar-preserve-food/ Tue, 06 Mar 2012 07:22:00 GMT http://www.sciencerat.com/gyroscope/ The gyroscope was named by Leon Foucault, a French physicist, in an attempt to demonstrate the earth's rotation. A freely rotating disk, called a rotor, was mounted on a spinning... http://www.sciencerat.com/gyroscope/#comments http://www.sciencerat.com/gyroscope/ Tue, 21 Feb 2012 12:22:00 GMT http://www.sciencerat.com/electromagnetic-relay/ An electromagnetic relay is a type of electrical switch controlled by an electromagnet. The electromagnetic relay is used in a variety of applications, including alarms and sensors, signal switching, and... http://www.sciencerat.com/electromagnetic-relay/#comments http://www.sciencerat.com/electromagnetic-relay/ Tue, 07 Feb 2012 06:49:00 GMT http://www.sciencerat.com/how-does-a-car-engine-work/ A car engine is also known as an internal combustion engine, and is designed to use small, controlled explosions to create the power necessary to move the vehicle. This type... http://www.sciencerat.com/how-does-a-car-engine-work/#comments http://www.sciencerat.com/how-does-a-car-engine-work/ Thu, 19 Jan 2012 06:53:00 GMT http://www.sciencerat.com/possible-dangers-of-nanotechnology/ Nanotechnology is a branch of science that deals with particles 1-100 nanometers in size. Experts believe possible dangers of nanotechnology lie in how these tiny particles might interact with the... http://www.sciencerat.com/possible-dangers-of-nanotechnology/#comments http://www.sciencerat.com/possible-dangers-of-nanotechnology/ Mon, 02 Jan 2012 07:09:00 GMT http://www.sciencerat.com/what-causes-thunder/ Thunder is caused by lightning, which is essentially a stream of electrons flowing between or within clouds, or between a cloud and the ground. The air surrounding the electron stream... http://www.sciencerat.com/what-causes-thunder/#comments http://www.sciencerat.com/what-causes-thunder/ Tue, 13 Dec 2011 12:18:00 GMT http://www.sciencerat.com/water-softeners/ A typical water-softening system removes calcium and magnesium ions from hard water and replaces them with sodium ions. Calcium and magnesium ions interfere with the action of household soaps and... http://www.sciencerat.com/water-softeners/#comments http://www.sciencerat.com/water-softeners/ Wed, 23 Nov 2011 13:48:00 GMT http://www.sciencerat.com/jets-leave-a-white-trail-in-the-sky/ Jets leave white trails, or contrails, in their wakes for the same reason you can sometimes see your breath. The hot, humid exhaust from jet engines mixes with the atmosphere... http://www.sciencerat.com/jets-leave-a-white-trail-in-the-sky/#comments http://www.sciencerat.com/jets-leave-a-white-trail-in-the-sky/ Fri, 11 Nov 2011 06:53:00 GMT http://www.sciencerat.com/causes-of-a-volcano-to-erupt/ A volcano is essentially an opening or a vent through which this magma and the dissolved gases it contains are discharged. Although there are several factors triggering a volcanic eruption... http://www.sciencerat.com/causes-of-a-volcano-to-erupt/#comments http://www.sciencerat.com/causes-of-a-volcano-to-erupt/ Mon, 31 Oct 2011 07:27:00 GMT http://www.sciencerat.com/jet-propulsion-engines/ The term jet propulsion refers to the action produced by a reactor to the ejection of matter. Jet propulsion revolutionized the science of flight by dramatically increasing possible speeds and... http://www.sciencerat.com/jet-propulsion-engines/#comments http://www.sciencerat.com/jet-propulsion-engines/ Tue, 18 Oct 2011 06:31:00 GMT http://www.sciencerat.com/computer-telephony-integration/ Computer telephony integration (CTI) means coordinating a computer with a telephone system, and using the computer (perhaps even a desktop machine) to perform the call control functions usually associated with... http://www.sciencerat.com/computer-telephony-integration/#comments http://www.sciencerat.com/computer-telephony-integration/ Mon, 03 Oct 2011 07:06:00 GMT