General Questions

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SolidSnake15
Somewhere around 38,400,000,000 if each pancake was 1 cm thick. Now let's get some serious questions in here.

How does a pacemaker work to regulate heart beats? My grandpa used to have one before he died of old age, I've always wondered how they worked.
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Two ways. They monitor electrical impulses from the Vagus nerve - the first type inserts an impulse when it doesn't detect one and the second delivers a shock to stop the heart when it detects irregular impulses/heartbeats (fibrillation) to allow it to reset to a normal rhythm.

There are many various types of pacemakers which can monitor a single chamber of the heart or multiple ones, and they can include cardioverters and defibrillation functions - or not.
 
Famine
the second delivers a shock to stop the heart when it detects irregular impulses/heartbeats (fibrillation) to allow it to reset to a normal rhythm.
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When it gives you a shock, do you look like Yahoo Serious for a few seconds?

young-bg.gif


And a serious question (non-yahoo this time), am I going to need a pacemaker in later life?
 
No, but he does suffer from Atrial Fibrillation (paroxysmal?).

I don't actually know the answer - but I don't think so. I'll wait for the ners to wake up to answer for you.
 
DQuaN
Do you drink? Smoke? Excersise regularly?
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Yes (but not in your league :p), no and no.
Famine
No, but he does suffer from Atrial Fibrillation (paroxysmal?).

I don't actually know the answer - but I don't think so. I'll wait for the ners to wake up to answer for you.
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I was asked by a colleague if I would need one, and I didn't know. No doc has mentioned it to me.
 
daan> I don't honestly know the answer to that.
But, what I do know is that AF is annoyingly common and all of the patients I've dealt with who have a history of it, don't have a pacemaker fitted.

Pacemakers are usually fitted when an irregular heart rhythm can cause blackouts, such as bradycardia (slow heart rate) and Long QT syndrome (where the spiky bit on the ECG tracing is too wide and the heart thinks there's no electrical impulse and stops).

I've not known of anyone with AF needing a pacemaker. I think it may also depend on how many episodes of it you have in a given time. If you're going into PAF every week, for example and need cardioverting every time then yes, I think a pacemaker would be a consideration. Perhaps have a chat with your consultant next time you're seen by him.
 
Milford Cubicle
Perhaps have a chat with your consultant next time you're seen by him.
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I got a card in a few days after I came out of hospital. "Oh, they want to see me quicker this time", thinks I. An appointment on the 9th of September says otherwise... :ouch:

Interestingly, I've changed consultants too. Maybe the one that put me on the drugs at christmas, only for me to go AF again 6 months later, has been sacked for being rubbish...

Thanks for all your help too. Its handy being able to ask you all my questions. 👍
 
What is Torque?

I've done a google search on it, and it's left me even more flummoxed than before. I understand it is based around pulling power and that more torque = better acceleration (weight allowing?).

Help.
 
*runs away, finds a hiding place and curls up in a foetal position*
 
I'm no expert, and this may not be the car-related part you might be looking for, but from what we learned this year:

Torque is a rotational force that you apply on an object, which then changes that object's rotational momentum (and therefore, it's rotational speed, assuming mass remains the same). It works just like a Force does in a straight line.
 
No - I can just see the way this thread is about to go. I figured I'd find somewhere quiet and safe until it passes.
 
daan
Thanks for all your help too. Its handy being able to ask you all my questions. 👍
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It's not a problem. I owe you a zillion favours in return for your generosity anyway.
 
daan
I was asked by a colleague if I would need one, and I didn't know. No doc has mentioned it to me.
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I have to assume that as your case involves Atrial Fibrillation, similar to mine, ablation would be a more likely scenario.

As my arrhythmic specialist explained it, they basically find the nerves that are causing the problem and burn them. After that run of torture they submit to your will and behave.

Here is a link about ablation for arrhythmias.
http://www.webmd.com/heart-disease/treating-arrhythmias-ablation

I don't know if it is an option for you but this is what my doctors are contemplating for me at the moment.
 
Metar
I'm no expert, and this may not be the car-related part you might be looking for, but from what we learned this year:

Torque is a rotational force that you apply on an object, which then changes that object's rotational momentum (and therefore, it's rotational speed, assuming mass remains the same). It works just like a Force does in a straight line.
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Thats sounds like centrifugal force to me.
 
There is no thing as centrifugal force. Not ever. A centrifugal force is a feeling, it is our perception of movement around an axis, but no real force that acts between two or more objects. What we call centrifugal force in everyday life is merely the effects of our inertia (in accordance with Newton's first law) while accelerating towards a center.

That acceleration is caused by a centripetal force - a force which acts towards a set center, at a right angle to the current vector of speed. As a result, only the direction, but not the size, of the speed-vector changes: Motion around a circle. That's completely unrelated to torque, angular momentum or angular velocity.


What we're talking about is angular momentum, which is the moment of inertia times the angular velocity. Torque changes that angular momentum. Assuming the moment of inertia remains static (it usually does on a fixed object), then the angular velocity (measured in change of angle for a set timeframe, rather than change of location for a set timeframe) is changed when torque acts upon an object.
 
Centripetal force is the result of angular momentum. Torque is the application of rotational force that increases angular momentum.

Take a lever, put a fitting on it so you can install a socket wrench at the end. Put the socket on a bolt head, and apply force to the lever at the other end (let's call that the "handle.") The handle doesn't move down in a straight line, it rotates around the bolt head. That's a rotational force being applied. That is torque. The measurement of torque is the force being applied (pounds, newtons, depending on your system) multiplied by the length of the lever (feet, meters, whatever.) If my lever was one and a half feet long, and I applied 50 pounds, then the torque is 75 pound-feet.

The basic measurement of "oomph" out of a car engine is torque. At any given RPM the engine is capable of producing a certain amount of force at its crankshaft. Since the crankshaft is rotating, the force is rotational, and thus is expressed as torque. The crankshaft is capable of exerting a certain number of pound-feet at any given engine speed.

The horsepower that the engine is capable of is a direct function of the torque produced times the RPM.
(power = force * speed)

As for Famine's response, this "torque and horsepower" discussion is nearly an annual thing. There should be a convention or something.

Examples here and here.
 
What causes Windows to do this?
err373.png

Even though the folder's empty, not in use and not write-protected, it still won't delete. It's happened quite a few times before, so what causes it?

(yeah, it's a general question)
 
Actually i have that problem on my usb too. I go to delete a folder which has 1kb files in it and it says something like "Cannot delete, folder empty." I dont want to format but i might aswell.
 
If you have another Explorer window looking at that folder, it will not delete, as it's busy. Also, if it's a share that someone has a connection to, whether they are looking at it or not. And legendary's message should be, "Cannot delete, folder not empty." Same thing. A folder that's busy is not empty, even if nothing's in it. By busy, any app or window looking at it, or a network user mapped to it.
 
Thing is, the folder wasn't busy. I was just trying to delete it.

No other Explorer windows open, not a shared folder :confused:
 
Same, the folder is not being used by anything other than the explorer window trying to delete it.
 
Have you guys tried Unlocker? Supposed to get around that "Cannot Delete" thing pretty quick.
 
I think I need that app... stupid damn dlls, svchost and whatnot... grrrrr...
 
*McLaren*
Have you guys tried Unlocker? Supposed to get around that "Cannot Delete" thing pretty quick.
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Yup, thats pretty much it! 👍
Probably one of the most useful application to delete almost anything without fail.......
 
Thanks, now I can delete all of the more... questionable content that I have saved on this computer that won't go :sly:
 
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