Search found 100 matches

by kbltd
Fri Feb 03, 2012 7:30 am UTC
Forum: Mathematics
Topic: I have a function in parametric form. I want it as y=f(x).
Replies: 5
Views: 1344

Re: I have a function in parametric form. I want it as y=f(x

Funnily enough I had the same idea for audio processing in 1981 and called it "slew rate limiting". Back then there were no chips that could do the arithmetic fast enough, so I asked a friend who did audio frequency design. He pointed out that it was differentiation followed by limiting fo...
by kbltd
Wed Jan 18, 2012 3:09 am UTC
Forum: Language/Linguistics
Topic: English as She Is Spoke [English practice]
Replies: 338
Views: 161937

Re: English as She Is Spoke [English practice]

"Especial" can be found in Shakespeare - Hamlet act 4 scene 3.
by kbltd
Thu Sep 22, 2011 11:35 am UTC
Forum: Mathematics
Topic: Why standard deviation?
Replies: 24
Views: 4870

Re: Why standard deviation?

I'd say don't get too distracted by the behaviour of the normal distribution. The standard deviation applies to any distribution.
by kbltd
Mon Sep 19, 2011 12:39 pm UTC
Forum: General
Topic: Lucky Ten Thousand (TIL)
Replies: 13430
Views: 1773331

Re: Today I Learned

TIL that Henry VIII was 52 inches around and 61 inches high before he died.


Where did you learn that? Most references seem to say he was about 6'1" tall. That's 73".
by kbltd
Thu Aug 18, 2011 1:47 pm UTC
Forum: General
Topic: comparing apples, oranges on google ngram
Replies: 10
Views: 2422

Re: comparing apples, oranges on google ngram

I expect the verb "to duck" got quite a bit of use during the Second World War.
by kbltd
Wed Jul 06, 2011 8:19 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0921: "Delivery Notification"
Replies: 93
Views: 20647

Re: 0921: "Delivery Notification"

Oh yeah. Too true to be good...
by kbltd
Sun May 01, 2011 11:50 pm UTC
Forum: General
Topic: I Shouldn't Have To Say This
Replies: 2609
Views: 397144

Re: I Shouldn't Have To Say This

Tod Sloan (he's in Wikipedia BTW) represents "own" rather than "alone", so there too the number of syllables matches.
by kbltd
Tue Apr 12, 2011 9:03 am UTC
Forum: General
Topic: The "How Have I Never Noticed That Before?" thread
Replies: 1141
Views: 199981

Re: The "How Have I Never Noticed That Before?" thread?

The name of the title character of the film "Bambi" is derived from Italian "bambino". I feel slightly more stupid than usual.
by kbltd
Wed Mar 30, 2011 7:23 am UTC
Forum: Mathematics
Topic: Mathematics and Constants- Inconsistency with the Universe?
Replies: 31
Views: 3136

Re: spelling and Constants- Inconsistency with the Universe?

Doogly said Pi is all over physics, like flies on shit. You can't just rationalize all your units and make it drop. It needs to be there. I agree with you. So I need to clarify what I was trying to say when I was asserting that it wasn't a physical constant. A constant used in physics may be a diffe...
by kbltd
Tue Mar 29, 2011 8:59 am UTC
Forum: Mathematics
Topic: Mathematics and Constants- Inconsistency with the Universe?
Replies: 31
Views: 3136

Re: Mathematics and Constants- Inconsistency with the Univer

VMhent, would you agree with me when I assert that pi is not a physical constant but a mathematical one?
by kbltd
Wed Mar 23, 2011 4:55 am UTC
Forum: General
Topic: What is your name an anagram of?
Replies: 384
Views: 54572

Re: What is your name an anagram of?

Deadly Vikings
Aged vinyl disk
by kbltd
Tue Mar 08, 2011 12:10 am UTC
Forum: General
Topic: Most excellent times
Replies: 5132
Views: 924663

Re: Awesome Thread (because we need more awesome)

I've collected the desktop system that's going to replace my old (October 2002) laptop. It has twice as many screens, four times as many cores, eighteen times as much RAM and twenty five times as much disk space.

Now I am become Dilbert:
http://www.dilbert.org/strips/comic/1994-02-19
by kbltd
Thu Mar 03, 2011 4:16 am UTC
Forum: General
Topic: Sleep-time holodeck experiences
Replies: 3408
Views: 796711

Re: What were your dreams last night?

Somewhere between ten and fifteen Birman cats were scrabbling at my back window trying to get in. (In waking life, fortunately, the next door neighbour has only two scrabbling Birmans.)
by kbltd
Thu Feb 24, 2011 9:39 pm UTC
Forum: Mathematics
Topic: Circles O
Replies: 8
Views: 1510

Re: Circles O

This is sometimes called the kissing circles problem. There's a solution in verse called "The Kiss Precise" by Frederick Soddy - Google will find it.
by kbltd
Tue Feb 15, 2011 9:47 pm UTC
Forum: Science
Topic: What do you think is the best data analysis software?
Replies: 27
Views: 3002

Re: What do you think is the best data analysis software?

SAS.
Because companies pay me by the hour for coding in it.
by kbltd
Sun Dec 05, 2010 9:33 pm UTC
Forum: Mathematics
Topic: Would this be a proof?
Replies: 14
Views: 1802

Re: Would this be a proof?

Basically, I showed that given an odd number, you can find two consecutive integers larger than the odd number that create a Pythagorean triple. I agree that could be a nice example for the OP to have a look at and yes, phrased like that, there's a PT that's both primitive and unique. The question ...
by kbltd
Sun Dec 05, 2010 5:10 am UTC
Forum: Mathematics
Topic: Would this be a proof?
Replies: 14
Views: 1802

Re: Would this be a proof?

Uhh, gorcee, mdyrud specifically mentioned odd numbers, so your line of argument doesn't address the specific claim being made - it can only exhibit non-unique even numbers.
by kbltd
Sun Dec 05, 2010 3:44 am UTC
Forum: Mathematics
Topic: Would this be a proof?
Replies: 14
Views: 1802

Re: Would this be a proof?

Ah, but you had one 52 on the left and one on the right of the equals sign. Maybe mdyrud meant that all odd numbers appear in the summands of a unique, coprime, Pythagorean triple?

Nope...
152+82=172
152+1122=1132

212+202=292
212+2202=2212
by kbltd
Fri Oct 22, 2010 1:10 am UTC
Forum: Mathematics
Topic: Calculating Frequency
Replies: 15
Views: 2108

Re: Calculating Frequency

Good luck, and when you're adjusting how many samples you take, bear in mind the Nyquist frequency.

http://en.wikipedia.org/wiki/Nyquist_frequency
by kbltd
Thu Oct 21, 2010 10:15 pm UTC
Forum: Mathematics
Topic: Calculating Frequency
Replies: 15
Views: 2108

Re: Calculating Frequency

How smooth is your waveform? If it's well-behaved and not too noisy, maybe you could count how many times it crosses zero in a given interval.
by kbltd
Wed Oct 20, 2010 10:45 pm UTC
Forum: Mathematics
Topic: What's going on here? (trig / pi calculation)
Replies: 10
Views: 1409

Re: What's going on here? (trig / pi calculation)

It's common (though not universal) for 64 bit floating point arithmetic to use a 53 bit mantissa, which means you run out of precision in decimal terms at 53 log 2 digits. (You can represent all 15 digit integers precisely, but around 9.5 * 10^15 the trouble starts - hence your figures going wrong a...
by kbltd
Sat Aug 28, 2010 4:08 am UTC
Forum: Mathematics
Topic: New poll shows that correlation is causation
Replies: 14
Views: 3787

Re: New poll shows that correlation is causation

[quote]An overwhelming 64% of American's answered "YES", while only 38% replied "NO". Another 8% were undecided. [/quote]

110%. Nice touch.
by kbltd
Thu Aug 26, 2010 5:45 am UTC
Forum: Science
Topic: Advice on career choice
Replies: 21
Views: 3044

Re: Advice on career choice

I did a maths degree in the 1970s (funnily enough, did a course in relativity for the same reasons you want to - if I'd stuck to the algebra and analysis that came more naturally to me, I might have got a better degree.) I got a job in tech support in IT, which was called Data Processing in those da...
by kbltd
Tue Nov 03, 2009 1:48 am UTC
Forum: Science
Topic: Smallest human population that can succesfully breed on?
Replies: 27
Views: 4041

Re: Smallest human population that can succesfully breed on?

Isn't it well established that all humans have a single female ancestor and a single male ancestor? http://www.oxfordancestors.com/content/view/35/55/ ... everyone alive on the planet today can trace their maternal ancestry back to just one woman. By all accounts, she lived in Africa about 150,000 –...
by kbltd
Fri Sep 04, 2009 4:12 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0632: "Suspicion"
Replies: 112
Views: 38070

Re: "Suspicion" Discussion

by kbltd
Thu Dec 27, 2007 1:38 pm UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

A Deadly Dangerous Evil Reptile

S N A K E
by kbltd
Mon Nov 26, 2007 2:27 pm UTC
Forum: Forum Games
Topic: 3 letters in a word
Replies: 1802
Views: 285834

Re: 3 letters in a word

Handful.

rcr
by kbltd
Mon Nov 26, 2007 2:26 pm UTC
Forum: Forum Games
Topic: 3 letters in a word
Replies: 1802
Views: 285834

Re: 3 letters in a word

Handful.

rcr
by kbltd
Thu Nov 15, 2007 1:05 pm UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Study Inorganic Chemistry, Know Yourself

O R G A N
by kbltd
Mon Nov 12, 2007 4:38 pm UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Did Milgram Shock Volunteers?

V O L T S
by kbltd
Mon Nov 05, 2007 1:40 pm UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Bought Audi, Silver In Colo(u)r

T U R B O
by kbltd
Wed Oct 31, 2007 8:06 am UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Don't Eat Those Grapes, Virginia

G R A P E
by kbltd
Tue Oct 30, 2007 4:23 pm UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Alcoholic Beverages Cause Dancing Erratically.

B O O Z E
by kbltd
Tue Oct 30, 2007 10:12 am UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Noble Men Nibble More Noodles

O O D L E
by kbltd
Tue Oct 30, 2007 10:12 am UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Noble Men Nibble More Noodles

O O D L E
by kbltd
Fri Oct 12, 2007 8:28 am UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

Everyone Jeers When Gordon Shouts

B R O W N
by kbltd
Thu Oct 11, 2007 2:22 pm UTC
Forum: Forum Games
Topic: Five Word Story
Replies: 213
Views: 41752

Re: Five Word Story

One day, three men went to the local bar to discuss their world domination plans, which they ironically called: "Project Dominate Local Bar". There, they started the meeting by ordering the man behind the bar to bring them his best table - a previously agreed codeword that would make him f...
by kbltd
Thu Oct 11, 2007 2:19 pm UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

My Azalea Dropped Its Petals

P E T A L
by kbltd
Wed Oct 10, 2007 12:45 pm UTC
Forum: Forum Games
Topic: Five letters
Replies: 1348
Views: 118461

Re: Five letters

We Eat Blue Stilton Enthusiastically.

M O U L D
by kbltd
Thu Oct 04, 2007 8:07 am UTC
Forum: Language/Linguistics
Topic: The English Spoken Language: RIP (Examples)
Replies: 154
Views: 21350

Re: The English Spoken Language: RIP (Examples)

Regarding [b]wrought[/b], I stand corrected, good people.

http://www.askoxford.com/concise_oed/wreak?view=uk

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