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	<title>Winner Science &#187; Physics</title>
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	<description>Churn, Learn &#38; Earn</description>
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		<title>Why laser is needed in holography</title>
		<link>http://www.winnerscience.com/science/physics/laser-physics/why-laser-is-needed-in-holography/</link>
		<comments>http://www.winnerscience.com/science/physics/laser-physics/why-laser-is-needed-in-holography/#comments</comments>
		<pubDate>Wed, 06 Mar 2013 10:58:21 +0000</pubDate>
		<dc:creator>amsh</dc:creator>
				<category><![CDATA[LASER]]></category>

		<guid isPermaLink="false">http://www.winnerscience.com/?p=3382</guid>
		<description><![CDATA[As recording process in holography is based on the principle of interference. For recording and for sustained interference, the path difference between various interfering light waves should always be less than longitudinal coherence length. For ordinary light source like mercury the coherence length is very small (≈3cm). The path difference introduced between light waves reflected&#8230;]]></description>
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		<title>Reflection and transmission hologram</title>
		<link>http://www.winnerscience.com/science/physics/laser-physics/reflection-and-transmission-hologram/</link>
		<comments>http://www.winnerscience.com/science/physics/laser-physics/reflection-and-transmission-hologram/#comments</comments>
		<pubDate>Tue, 05 Mar 2013 10:57:58 +0000</pubDate>
		<dc:creator>amsh</dc:creator>
				<category><![CDATA[LASER]]></category>

		<guid isPermaLink="false">http://www.winnerscience.com/?p=3380</guid>
		<description><![CDATA[Reflection hologram: If recording material in hologram is placed such that reference beam and object beam approach it from two opposite sides, then hologram formed is called Reflection Type hologram. The interference fringes are usually parallel to the surfaces of recording medium. When such a hologram reconstructed, then reference beam and object beam lie on&#8230;]]></description>
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		<title>Gravitational force and its properties</title>
		<link>http://www.winnerscience.com/science/physics/gravitational-force-properties/</link>
		<comments>http://www.winnerscience.com/science/physics/gravitational-force-properties/#comments</comments>
		<pubDate>Sun, 26 Aug 2012 07:55:29 +0000</pubDate>
		<dc:creator>amsh</dc:creator>
				<category><![CDATA[Physics]]></category>
		<category><![CDATA[definition gravitational force]]></category>
		<category><![CDATA[features or characteristics of gravitational force]]></category>
		<category><![CDATA[properties of gravitational force]]></category>
		<category><![CDATA[types of fundamental force]]></category>

		<guid isPermaLink="false">http://www.winnerscience.com/?p=3197</guid>
		<description><![CDATA[Gravitational force is the weakest force in nature. There are many properties of gravitational force, but first of all let us discuss about the various fundamental forces present in nature. There are mainly four types of forces exist in nature: 1. Gravitational force 2. Weak nuclear force 3. Electromagnetic force 4. Strong nuclear force. Today&#8230;]]></description>
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		<slash:comments>2</slash:comments>
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		<title>Einstein Coefficient Relation</title>
		<link>http://www.winnerscience.com/science/physics/laser-physics/einstein-coefficient-relations/</link>
		<comments>http://www.winnerscience.com/science/physics/laser-physics/einstein-coefficient-relations/#comments</comments>
		<pubDate>Tue, 13 Mar 2012 15:05:33 +0000</pubDate>
		<dc:creator>amsh</dc:creator>
				<category><![CDATA[LASER]]></category>
		<category><![CDATA[derivation Einstein Coefficient’s in laser]]></category>
		<category><![CDATA[importance Einstein Coefficient’s]]></category>
		<category><![CDATA[significance Einstein Coefficient’s]]></category>

		<guid isPermaLink="false">http://www.winnerscience.com/?p=2886</guid>
		<description><![CDATA[Einstein Coefficient Relation derivation and discussion: Einstein showed the interaction of radiation with matter with the help of three processes called stimulated absorption, spontaneous emission and stimulated emission. He showed in 1917 that for proper description of radiation with matter,the process of stimulated emission is essential.Let us first derive the Einstein coefficient relation on the&#8230;]]></description>
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		<title>How does a laser work</title>
		<link>http://www.winnerscience.com/science/physics/laser-physics/how-does-a-laser-work/</link>
		<comments>http://www.winnerscience.com/science/physics/laser-physics/how-does-a-laser-work/#comments</comments>
		<pubDate>Wed, 18 Jan 2012 16:48:09 +0000</pubDate>
		<dc:creator>amit_physics</dc:creator>
				<category><![CDATA[LASER]]></category>
		<category><![CDATA[construction laser]]></category>
		<category><![CDATA[how a laser works]]></category>
		<category><![CDATA[how do lasers work]]></category>
		<category><![CDATA[laser]]></category>
		<category><![CDATA[laser working]]></category>
		<category><![CDATA[working laser]]></category>

		<guid isPermaLink="false">http://www.winnerscience.com/?p=2780</guid>
		<description><![CDATA[One must have seen and if not seen then must have heard the term laser. But if you have seen the laser light emitting from a source, then there should be natural question how does a laser work? Therefore let us discuss how the laser works? As already discussed in my earlier articles, that the&#8230;]]></description>
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		<slash:comments>2</slash:comments>
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		<title>Difference beween holography and photography</title>
		<link>http://www.winnerscience.com/science/physics/laser-physics/difference-beween-holography-and-photography/</link>
		<comments>http://www.winnerscience.com/science/physics/laser-physics/difference-beween-holography-and-photography/#comments</comments>
		<pubDate>Mon, 30 May 2011 08:40:32 +0000</pubDate>
		<dc:creator>amit_physics</dc:creator>
				<category><![CDATA[LASER]]></category>
		<category><![CDATA[Difference beween hologram and photograph]]></category>
		<category><![CDATA[Difference beween holography and photography]]></category>

		<guid isPermaLink="false">http://www.winnerscience.com/?p=1930</guid>
		<description><![CDATA[Last time I have discussed about the holography and written that it is a two stage process. The first stage is recording of hologram in the form of interference pattern and in the second stage, the hologram acts as a diffraction grating for the reconstruction beam and the image of the object is reconstructed for&#8230;]]></description>
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