# Magnification Formulas & Practice - Video Lesson

This short lesson deals with a few calculations related to magnification. Magnification is actually a simple idea. Magification just means the radiographic image of a part is larger than the part itself. All radiographs have some degree of magnification, and this is a result of the diverging beam. The beam as it travels gets wider. And as a result of that, the image of an object is going to be larger than the object itself. So here's a few calculations that relate to magnification. There's actually some specific formulas that we use to calculate the magnification factor. And that's these two formulas here. M f simply stands for magnification factor. The most common one is magnification equals the SID over the S OD, and then a similar equation is the magnification factor being equal to the image size over the object size. So it's actually a pretty simple idea. So concerning that first equation, the SID over the SOD, an example of that would be an SID of forty

## Lesson Quiz

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