Download MAKE Magazine, Issue 40 PDF

Make journal quantity 40
Makers by no means had it so strong! instruments to be had to makers have become more and more subtle and particular, extra available, and cheaper. Makers may also upload the "big tools" to their toolboxes--those mostly simply on hand at their neighborhood makerspaces. As making turns into extra prolific, makerspaces are experiencing exponential progress around the U.S.

Learn approximately those instruments and the makerspaces the place you could discover ways to use them:
CNC machines
Laser cutters
Plasma torches
3D printers
woodworking tools
In addition, this factor covers new microcontroller systems, and initiatives like a beer-delivering robotic and submarine simulator.

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Extra resources for MAKE Magazine, Issue 40

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If all of the materials are at hand, the pump can be put together in about a half hour. ) ± Petroleum jelly a e r o d y n a m i c s T o o ls ? Tin snips ? Vacuum gauge (optional) To see how the pump works, look at the drawing below. The pump consists of a small diameter pipe (the piston) inserted into a larger diameter pipe (the cylinder). The drawing shows the pump at two points during its operation. The top drawing shows air being drawn into the pipe by pulling out the piston. The bottom drawing shows air exiting the 29 30 G o n z o G i z m o s pipe when the piston is pushed back in.

The difference is viscosity. Viscosity is a property of fluids (like air or water). It is the ability of the fluid to resist changes in its shape that do not change its volume. Viscosity is caused by interactions between the molecules of the fluid. It is the transfer of momentum from one part of the fluid to another part. In a gas such as air, viscosity is caused almost entirely by collisions between molecules. The faster the molecules are moving, the more effective is the transfer of momentum.

Glue one bead at the end of the rod. Let the glue harden, then place the remaining beads on the rod, so they repel. Glue the last bead to the far end of the rod, again making sure it repels the bead before it. There should be a good deal of space between the last two beads, so you can watch the beads move and stack themselves.

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