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A machine that draws a line
Lumen · High school
Kempe’s lecture: a ruler cheats. A circle does not. Watt almost draws a straight line. Peaucellier’s seven bars actually do.
Student age
10years · 5th grade
Lumen · High school
Kempe’s lecture: a ruler cheats. A circle does not. Watt almost draws a straight line. Peaucellier’s seven bars actually do.
Student age
10years · 5th grade