Analytical Techniques 1

Question 1

Understand the development and significance of petrography in the study of rocks.

Answer 1

Petrography involves detailed descriptions of rocks at different scales. It utilizes polarized light microscopy, invented by William Nicol, and thin sections to examine mineral structures.

Question 2

comprehend the principles and applications of scanning electron microscopy (SEM).

Answer 2

SEM uses electrons for imaging, providing higher resolution than light microscopy. It scans the sample surface with an electron beam and detects signals related to topography and composition. Components include electron source, lenses, sample stage, and detectors.

Question 3

Explore the concept of 3D imaging and its significance in visualizing the interior features of solid objects.

Answer 3

3D imaging, such as X-Ray Microtomography (CT), builds a 3D model based on x-radiographs. It allows visualization of the internal features and is sensitive to density contrasts.

Question 4

Gain knowledge of cathodoluminescence microscopy and its role in revealing hidden information.

Answer 4

Cathodoluminescence microscopy emits visible light from a material when excited by electrons. It unveils information not easily seen by other methods, such as crystal structures.