My latest video for microscopists is out now, on the subject of coherence. See:
CONTENTS
00:00 Intro
00:32 What is ‘Coherence’?
04:13 Coherence is Measured over Space or Time
05:22 Temporal (Longitudinal) Coherence: Coherence Length / Time
11:10 Spatial (Transverse) Coherence: Coherence Width / Area
19:03 Conclusions