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Starship | SN8 | High-Altitude Flight Recap

Last Week Tonight with John Oliver: Goodbye, RadioShack

nanrod says...

But where will I buy my odd occasional resistor or capacitor now. Oh right. I'm in Canada, Radioshack died here a long time ago and all the locations became "The Source". Which of course is just Radioshack under a different name, but not bankrupt ... yet.

How To Hot-Wire a Car

The Electric Fence

Payback says...

>> ^Archanon:

Don't listen to that elbow or back of the hand crap. Even though most if not all electric fences are DC, they pulse the current so you would never have a clench response. Instead, pick up a blade of grass and touch it with that. The grass acts as a resistor and lowers the current you receive. He did earn a few Darwin points however for standing in a mud-puddle and touching something electric. He should go hug an electrical engineer for sparing his life.


Real men piss on them.

The Electric Fence

Unsung_Hero says...

>> ^WaterDweller:

>> ^schlub:
Yeah, it's called general advice for touching something that may be electrified. You go ahead and use your blade of grass.
>> ^Archanon:
Don't listen to that elbow or back of the hand crap. Even though most if not all electric fences are DC, they pulse the current so you would never have a clench response. Instead, pick up a blade of grass and touch it with that. The grass acts as a resistor and lowers the current you receive. He did earn a few Darwin points however for standing in a mud-puddle and touching something electric. He should go hug an electrical engineer for sparing his life.


General advice for touching something that may be electrified: don't.


General Advice for posting a response to a response to a response: Don't.

The Electric Fence

WaterDweller says...

>> ^schlub:

Yeah, it's called general advice for touching something that may be electrified. You go ahead and use your blade of grass.
>> ^Archanon:
Don't listen to that elbow or back of the hand crap. Even though most if not all electric fences are DC, they pulse the current so you would never have a clench response. Instead, pick up a blade of grass and touch it with that. The grass acts as a resistor and lowers the current you receive. He did earn a few Darwin points however for standing in a mud-puddle and touching something electric. He should go hug an electrical engineer for sparing his life.



General advice for touching something that may be electrified: don't.

The Electric Fence

schlub says...

Yeah, it's called general advice for touching something that may be electrified. You go ahead and use your blade of grass.
>> ^Archanon:

Don't listen to that elbow or back of the hand crap. Even though most if not all electric fences are DC, they pulse the current so you would never have a clench response. Instead, pick up a blade of grass and touch it with that. The grass acts as a resistor and lowers the current you receive. He did earn a few Darwin points however for standing in a mud-puddle and touching something electric. He should go hug an electrical engineer for sparing his life.

The Electric Fence

Archanon says...

Don't listen to that elbow or back of the hand crap. Even though most if not all electric fences are DC, they pulse the current so you would never have a clench response. Instead, pick up a blade of grass and touch it with that. The grass acts as a resistor and lowers the current you receive. He did earn a few Darwin points however for standing in a mud-puddle and touching something electric. He should go hug an electrical engineer for sparing his life.

10 Accidental Inventions

bamdrew says...

My favorite of the list is Greatbatch, and his story really gets to the value of inspiration and curiousity as an inventor. He was just making a device to record heart beats, and put in an incorrect resistor for his circuit, resulting in a oscillating blip in his recordings. Instead of going 'fuck! I made the goddamn thing wrong! So I threw it on the grooooound!' No he said, 'Woah, thats neat, I have sort-of a built-in time guage that is very regular in my recordings, and can see how irregular the heart beat is ... wait a minute...', and then proceeded to work on the completely crazy idea of an implantable, miniature device to electrically stimulating the heart to keep it beating evenly as people just walked around.

I'd argue that its basically impossible to accidentally invent something. You have to be bright enough to recognize something interesting, and curious enough to follow it off in the direction it leads.

Technology Used to Sell Kids Crap

osama1234 says...

What bothers me more than the advertising to children is the fact that now the current biodegradable cardboard box will be replaced with a box that contains electronics equipment that will end up in the landfill. You have to have a basic coil of wire, some voltage converters, wires, resistors, and LED or other illuminating device.

Holy Grail of Energy?

budzos says...

This reminds me of a Gordon Korman book called "I Want to Go Home". The main character is stuck at summer camp where he is sort of a passive resistor. He's assigned an art project, and produces a wooden box filled with sand. He calls "le sable", which causes everyone to see it as genuine art, because they don't speak french and assume they just don't get the art piece, which must be sophisticated to have a french name.

arvana (Member Profile)

rottenseed says...

Last night in my physics course we were learning how to find impedance due to inductors, capacitors, and resistors in an AC circuit and we had to learn a math that was new to me before last night. In that math lesson we went over the power series of e^x and found mathematically how e^(i*pi)=-1, or as it's more commonly shown e^(i*pi) + 1 = 0. I guess this is known to the math community as one of the most elegant equations due to it's complexity and it's purity. Pretty crazy...

The Memristor Will Replace RAM and the Hard Drive

westy says...

Memristors /memˈrɪstɚ/ ("memory resistors") are a class of passive two-terminal circuit elements that maintain a functional relationship between the time integrals of current and voltage. This results in resistance varying according to the device's memristance function. Specifically engineered memristors provide controllable resistance useful for switching current. The memristor is a special case in so-called "memristive systems", a class of mathematical models useful for certain empirically observed phenomena, such as the firing of neurons.[3] The definition of the memristor is based solely on fundamental circuit variables, similar to the resistor, capacitor, and inductor. Unlike those more familiar elements, the necessarily nonlinear memristors may be described by any of a variety of time-varying functions. As a result, memristors do not belong to linear time-invariant (LTI) circuit models. A linear time-invariant memristor is simply a conventional resistor.[4]

Memristor theory was formulated and named by Leon Chua in a 1971 paper. Chua strongly believed that a fourth device existed to provide conceptual symmetry with the resistor, inductor, and capacitor. This symmetry follows from the description of basic passive circuit elements as defined by a relation between two of the four fundamental circuit variables, namely voltage, current, charge and flux.[5] A device linking charge and flux (themselves defined as time integrals of current and voltage), which would be the memristor, was still hypothetical at the time. He did acknowledge that other scientists had already used fixed nonlinear flux-charge relationships.[6] However, it would not be until thirty-seven years later, on April 30, 2008, that a team at HP Labs led by the scientist R. Stanley Williams would announce the discovery of a switching memristor. Based on a thin film of titanium dioxide, it has been presented as an approximately ideal device.[7][8][9] Being much simpler than currently popular MOSFET switches and also able to implement one bit of non-volatile memory in a single device, memristors integrated with transistors may enable nanoscale computer technology. Chua also speculates that they may be useful in the construction of artificial neural networks.[10]

The Retroencabulator - Rockwell Automations - Buy Stock NOW!

thinker247 says...

I've been having trouble lately trying to encabulate my semipermeable resistors in the solid-state hexagonal compartmentalizers. Will the retroencabulator fix this issue, or will I need a stronger encabulatory conductive stabilizing radiometer?

How To Make Night Vision SunGlasses



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