Comments by "Agnelo Mascarenhas" (@agnelomascarenhas8990) on "What is Retrieval-Augmented Generation (RAG)?" video.

  1. A transparent glass sheet has light grazing glass-air interface internally by total internal reflection. When you write on the surface, the internal light gets scattered off the ink and into the air. Best contrast is when you are perpendicular to the glass sheet and that's where the camera is installed on the other side of the writer. To create a blackboard type experience, the video is mirrored left-right or vertical axis.
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