magnification.html

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	<title>Microscope objectives: Magnification</title>
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	<h1>amsikking: Microscope objectives</h1>
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	<h2>Magnification</h2>
	<p>
	The <em>transverse</em> magnification (\(M_T\)) is the most familiar 
	specification for an objective that is usually provided by the manufacturer. 
	However, this is slightly confusing, since an infinity corrected objective has 
	no image (without an additional lens). It is therefore implicity assumed that 
	the user of an objective will use the <em>manufacturer tube lens</em>, at which 
	point the object is magnified by:
	
	\[ M_T = - \frac{y_i}{y_o} \tag{1}\]
	
	where the negative sign is by convention and indicates and <em>inverted</em> 
	image (<a class="citation" href="https://www.pearson.com/en-us/subject-catalog/p/Hecht-Optics-5th-Edition/P200000006793/9780137526420" 
	title="Optics, 5th edition; E. Hecht; 
	p164-165, ISBN-13: 9780133977226, ISBN-13: 9780137526420 (eBook),
	(2016)">Hecht 2016</a>).
	Ignoring the sign convention we can rewrite (1) in the form most familiar
	to microscope users:
	
	\[ Image = M_T \; Object \tag{2}\]
	
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	<figure>
    <img src="figures/magnification.png" alt="magnification.png">
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	(<a href="figures/objective_sketches.odp">.odp sketch</a>)
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