Bright Field Imaging and Dark Field Imaging

1. The bright field imaging contrast in TEM can NOT be increased by enhancing:
2. Bright field image is obtained when ________________ beam is captured to form image after it transmits through the sample
3. Dark field image is obtained when ________________ beam is captured to form image after it transmits through the sample
4. The following TEM micrograph is _________________ image.
5. The following TEM micrograph is _________________ image.