No detail of the lecture hall is included, the blackboard frame is removed and we are left with a surface charged with abstract equations. At this stage they are documents. However, once removed ...

For the past four minutes, Walter Lewin has been laboring at the chalkboard ... to hundreds of undergraduates in MIT’s largest lecture hall, 26-100. With his fly-away hair and penchant for ...

At the chalkboard on the left, Justin Brereton was rushing through the equation as if a bomb were ... Between them, on a desk in a lecture hall below the Great Dome at the Massachusetts Institute ...