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Step 8The Finished Project
Gather all the LEDs and place them on the fridge. Now it's time to start making pictures on your fridge.
When not used in the grid, the magnetic LEDs can also be used as regular refrigerator magnets - although they won't light up unless they're placed in the grid.
When not used in the grid, the magnetic LEDs can also be used as regular refrigerator magnets - although they won't light up unless they're placed in the grid.
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Ohm's law:
Voltage / Resistance = Max Current
resistance of skin = 1,500,000 ohms
5 / 1500000 = 0.0000033 Amps
You won't even feel that.
http://www.people.vcu.edu/~rgowdy/mod/086/imp.htm#4
Implying I'm thick? lol!
Anything above several hundred Hz travels along the *surface* of your skin and is relatively safe (increase the voltage enough, and yes, it gets dangerous).
Anything lower than ~100Hz can travel through the core of the body, and is potentially lethal, even at low voltages (so i've read).
And to hurt yourself, you'd actually need to cross the circuit with *both* hands,
otherwise, you're just creating a circuit between two fingers. You might feel a tingle (we never have with ours), but you're not going to fry anything.
Note that i am neither an engineer nor a lawyer -- tinker with caution.
The components are usually represented like so:
Resistors: plates with little holes in them or narrow diameter pipes. The rate at which water that will flow is proportional to the pressure drop along the system.
Diodes: One way valves. You can think of the forward bias voltage as the pressure it takes to open the value at all.
Batteries: A pump.
Inductors: An impeller with a flywheel attached. The bigger the inductor, the bigger the flywheel
Capacitors: A rubber membrane. Under pressure, it will stretch to hold some water, but ultimately no water passes through the membrane.
The list goes on. Transistors can be thought of a little gate arrangements, so that a little flow on the "base" lifts a gate on a much larger flow between the "collector" and the "emitter". While far from perfect, it's a good enough analogy that there are people who actually build complicated circuits out of pipes and other parts. They tend to be fascinating, but rarely useful.
-- Mitch
You, sir, or madam, or it, are cool. Like a mountain stream. I love the way you dealt with the gap between the doors...I would never have thought of that. Bravo.