How to draw dotted lines on a chalkboard
by David Pescovitz from on (#2MJ1F)
Former MIT physics professor Walter Lewin (who the university ultimately fired for sexual harassment) was a master of the chalkboard. Video below. Inspired by Lewin's skills, Mike Boyd explains how to draw dotted lines on a chalkboard.
https://www.youtube.com/watch?v=raurl4s0pjU
