GMU:Computing with Thread/Part2: Difference between revisions

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 == Levers and Cranes ==
 In this class we will explore the potential of levers and cranes for kinetic machines
+=== The fundamental law of threads ===
+''You can pull something with a string, but you can't push it.<br>
+That's common sense. And no computer knows it.''
+(Marvin Minsky)
+=== Threads between two points ===
+Using a threads to transmit information:
+* stick: symmetric with respect to push and pull
+* thread: pull, yes. push, no.
+* Can you build an anti-thread? (i.e. pull no, push no)
+=== Sliders ===
+Sliders are bars that connect transmit a motion by sliding back and forth
+* Getting to know the concept of degrees of freedomn
+* How can we make sure a bar only goes back and forth?
+* What other constructions can you think of?
+* What kind of constraints are imposed by your constructions?
+=== Levers ===
+Levers are bars that transmit a motion by rotating around a hinge
+* What practical applications of levers can you think of?
+* Explore different setups and their properties
+** How many points are involved, and how are they arranged?
+** How many different setups can you find?
+** How are the involved forces and distances related?
+** Which setups are suitable for which purposes?
+=== Linkages ===
+Linkages are bars that are connected via hinges.
+* how would you create rotating hinges using bars of wood and screws?
+* can you create a hinge using thread and what are the limitations?
+* create a linkage that can draw interesting curves
 == Wheels and Pulleys ==
 In this class we will explore the potential of wheels and pulleys for kinetic machines