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Mueen Nawaz wrote:
> Manuel Kasten wrote:
>>> And I'm in my 40's, and only learned I was tying my shoes wrong last
>>> year. I've been using a granny knot instead of a square knot for 40
>>> years.
>> Well, I just checked, and I'm using a granny knot, too. I'm not going to
>> change it, it works after all.
>
> I really don't want to check if I'm doing it right. It's right because
> it works!
Yes! I didn't even know knots had names! XP
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Mueen Nawaz wrote:
> I really don't want to check if I'm doing it right. It's right because
> it works!
BTW, this guy is great. There's someone else out there that has
something like 35 videos of how to tie your shoes really fast, but I
can't find it.
http://www.fieggen.com/shoelace/knots.htm
--
Darren New / San Diego, CA, USA (PST)
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I'm currently in a course that seems to be designed around the movie
"Memento."
Seriously.
Week one: talk about the history of Film and Literature (the title of the
course).
Week two: read the short story "Memento Mori", which "Memento" is based
on.
Week three: Watch "Memento".
Week four: More talking about "Memento".
Week five: ...
...Ben Chambers
www.pacificwebguy.com
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> I really don't want to check if I'm doing it right. It's right because
> it works!
Yeh me neither, I looked on Wikipedia at granny knot but couldn't work out
how that related to tying a shoe lace! I know I do it differently to most
others :-S
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> Originally I assumed that I went to this school because I couldn't read or
> write. But now, looking back, it has gradually become clear to me that *I*
> am not normal either. I do things that normal people don't do. There
> clearly *is* something wrong with me. And I know it's incurable. I find
> this extremely upsetting.
Nobody is normal, if they are they are probably pretty boring and nobody
would be interested in them apart from equally normal and boring people :-)
Seriously, forget the bad parts from growing up, you certainly seem way more
intelligent and willing to learn than your qualifications suggest. You
don't mention the fact that you have 3 GCSEs and no A-levels on your CV do
you? Because understandably most employers would just throw it in the bin.
At your age it is perfectly acceptable not to mention that on your CV and
just put your University course under "Education" with a few details of the
subjects covered.
> Girls? In a computing course...?
>
> Which part of the world do *you* live in?? o_O
It seemed to be 20-25% female for Engineering and also Computer Science at
my place. But then apparently it had been going up like 5% every year...
> (Actually, in fairness, the full class was 80 people, and IIRC about 6 of
> them were female. And 2 of them were my age. The other 4 were married with
> children.
Oh, on my course nearly everyone was my age, or maybe a year older if they
had done that "year in industry" thing before starting University.
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>> Also, are *human eyes* linear? Would you notice when brightness is
>> changing
>> perfectly linearly? :)
Hehe no probably not, anyway I highly doubt a filament lamp is linear
brightness wrt voltage either - for starters the temperature of the filament
probably has something to do with the power (which is proportional to V^2),
then the brightness of a black-body is probably not very linear wrt
temperature...
> Probably not. But when the light stays off, and then suddenly turns full
> on, with nothing in between, I'm fairly sure that's non-linear. ;-)
That's how LED works (they're diodes!), at a certain voltage suddenly they
start conducting very well. It's like they are a very low resistance
resistor, but you need to apply some "offset" voltage to get them conducting
first. Thus the difference between applying 2.0V and 2.5V could be the
difference between no light and blowing the LED!
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> I thought you could just treat a 7400 as a black box. Apparently not...
You can, but you must read the spec sheet of the "black box" to see what it
is expecting as its inputs and what it is going to give as the output. The
input spec will include the voltage range that it accepts as "low" and
"high", and also what the input resistance is.
> The LEDs actually worked just fine. It's the gate driving them that didn't
> do what it was ment to.
And the "output" spec will tell you within what range of voltages it will
output as "low" and "high", and what the output resistance / maximum output
current is. If you try to connect something that is using more current than
the IC can supply, there are going to be problems. Usually a 7400 should be
able to drive a single small LED directly, but anything bigger you need to
start using a small buffer circuit (often just a discrete transistor, or you
can get dedicated ICs to drive bigger loads).
> Presumably a debounce circuit is merely a low-pass filter?
Sometimes, but often you hook it up to a double throw switch, then you can
only "switch" the circuit by hitting the respective side. Simply bouncing
on and off of one contact will only switch the circuit once. As an
exercise, work out the logic for that :-)
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Am Fri, 14 Nov 2008 09:14:08 +0100 schrieb scott:
> That's how LED works (they're diodes!), at a certain voltage suddenly
> they start conducting very well. It's like they are a very low
> resistance resistor, but you need to apply some "offset" voltage to get
Actually it's I=Is*(exp(-V*e/(k*T))-1) (for ideal diodes, that is.)
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Jim Henderson wrote:
> So, you want to keep up with the tech industry?
Not *especially*, but...
> Subscribe to a slashdot RSS feed.
Two questions:
1. What's RSS?
2. What actually *is* Slashdot? I keep hearing about it, but I'm still
unclear on what it's supposed to "be".
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andrel wrote:
>> Well, I don't have an MSc. I only have a BSc.
>
> Didn't know that, that changes a lot, I guess.
Maybe. I'm not really sure what the difference is. (I don't really
comprehend the distinctions between the myriad of different
qualifications a person can hold.)
> Or
> if you start at the other end: for some likely kind of applicant to fill
> one position we will have an almost Andy shaped hole left.
If this doesn't make it into Invisible Me, I'll be amazed. ;-)
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