Contrast definition
Study of metals by transmission electron microscopy (TEM)

Article REF: M4135 V1

Contrast definition
Study of metals by transmission electron microscopy (TEM)

Authors : Miroslav KARLÍk, Bernard JOUFFREY

Publication date: September 10, 2008 | Lire en français

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2. Contrast definition

The contrast C is defined by the ratio :

C = \frac{I_{2} - I_{1}}{I_{2}} = \frac{Δ I}{I_{2}}

^( 1 )

with :

I ₂ – I ₁: difference in intensity between two adjacent parts of the image.

The eye can only discern changes in intensity from around 5...

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Bibliography

Bibiographical references

(1) - REIMER (L.) - Transmission Electron Microscopy. - 3 ^rd ed., Springer Series in Optical Sciences, vol. 36, Springer-Verlag, Berlin, 545 p. (1993).
(2) - WILLIAMS (D.B.), CARTER (C.B.) -...

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