* Infrared light and crystal shape: Infrared light is primarily used to detect heat and vibrations within materials. It doesn't provide the same level of detail about the physical shape of crystals as other techniques.
* Techniques for examining small crystal shapes: Scientists use a variety of techniques to visualize small crystals, including:
* Electron microscopy: Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) use beams of electrons to create highly detailed images of crystal structures at the nanoscale.
* X-ray diffraction: This technique uses X-rays to determine the arrangement of atoms within a crystal, providing information about its crystallographic structure and symmetry.
* Optical microscopy: Light microscopes, particularly with specialized techniques like polarized light microscopy, can reveal the shapes of crystals in some cases.
In summary: Infrared images are useful for studying the thermal properties and vibrations of materials, but not for examining the detailed shape of very small crystals. Other techniques are more suitable for that purpose.