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 2012-11-19, 02:23 #1 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 3·52·107 Posts Interesting formulæ Not sure if this belongs in the Lounge or Misc Math. We all know several formulae, laws, or equations that relate to everyday life, that are not well documented by science. This thread is intended to be a place to document these. Submitted as the first is one that most all of us are well aware of: the need to urinate as a function of distance from a known restroom, with compensation for temperature and perceived velocity. u = need to urinate p = constant (5.7 in United_States customary units) d = distance to known restroom t = ambient temperature, the base formula given is for degrees Fahrenheit v = perceived velocity (1 = exactly 'appropriate' velocity, 2 = twice 'appropriate' velocity), no units required, auto-adjusts for mode of transit. $u=p^{(1+(1/d))}*(1/v)*(98.6-t)^{0.02*(98.6-t)}$ Those of you with medical training may be able to refine this. Below is a data table: Code: d v t u 1.00 1.0 98.00 32 2.00 1.0 95.50 15 0.50 1.0 75.00 823 0.50 2.0 32.00 24858 1.00 2.0 98.55 16 1.00 4.0 98.55 8 0.25 1.0 75.00 26754 0.12 0.5 32.00 6091575835 0.10 1.0 32.00 55397617288 0.25 1.0 70.00 40965 0.12 0.7 50.00 706552439
2012-11-19, 17:00   #2
science_man_88

"Forget I exist"
Jul 2009
Dumbassville

26×131 Posts

Quote:
 Originally Posted by Uncwilly Not sure if this belongs in the Lounge or Misc Math. We all know several formulae, laws, or equations that relate to everyday life, that are not well documented by science. This thread is intended to be a place to document these. Submitted as the first is one that most all of us are well aware of: the need to urinate as a function of distance from a known restroom, with compensation for temperature and perceived velocity. u = need to urinate p = constant (5.7 in United_States customary units) d = distance to known restroom t = ambient temperature, the base formula given is for degrees Fahrenheit v = perceived velocity (1 = exactly 'appropriate' velocity, 2 = twice 'appropriate' velocity), no units required, auto-adjusts for mode of transit. $u=p^{(1+(1/d))}*(1/v)*(98.6-t)^{0.02*(98.6-t)}$ Those of you with medical training may be able to refine this. Below is a data table: Code: d v t u 1.00 1.0 98.00 32 2.00 1.0 95.50 15 0.50 1.0 75.00 823 0.50 2.0 32.00 24858 1.00 2.0 98.55 16 1.00 4.0 98.55 8 0.25 1.0 75.00 26754 0.12 0.5 32.00 6091575835 0.10 1.0 32.00 55397617288 0.25 1.0 70.00 40965 0.12 0.7 50.00 706552439
I don't have medical training but, I know of a condition that has relevance to urination formulae like this I believe and so:

1/((((b*w)/GFR)/B)*(d/vi)) is my best guess based on what I looked up,B= bladder capacity, b= blood volume, w = % waste by volume , GFR = glomerular filtrate rate, v and d have the same values as in your equation. this is one over percentage of bladder that can be filled in the time perceived to be needed to get to the known restroom.

Last fiddled with by science_man_88 on 2012-11-19 at 17:05

2012-11-19, 18:21   #3
xilman
Bamboozled!

May 2003
Down not across

234108 Posts

Quote:
 Originally Posted by Uncwilly Not sure if this belongs in the Lounge or Misc Math. We all know several formulae, laws, or equations that relate to everyday life, that are not well documented by science. This thread is intended to be a place to document these.
Said Einstein, "I have an equation,
Which to some may seem Rabelaisian,
Let V be virginity,
Approaching infinity,
Let P be a constant persuasion.

"Let V over P be inverted,
With the square root of Mu inserted,
N times into V ...
The result, Q.E.D.,
Is a relative!" Einstein asserted.

That one has been in the fortune(6) database for over 30 years.

Last fiddled with by ewmayer on 2012-11-19 at 18:56 Reason: "Virginity is like a balloon ... one prick and it's gone."

 2012-12-03, 05:05 #4 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 3·52·107 Posts Law of Dirty Rugs/Carpets: The chances of an open-faced jelly sandwich of landing face down on a floor covering are directly correlated to the newness, color and cost of the carpet/rug. f=chance of jelly/carpet contact n=newness in months c=grayscale value of carpet color (0=completely non-reflective black, 1=completely white) d=cost of carpet in dollars m=monthly income in dollars $f=(1/n)*c*(d/m)$
 2012-12-03, 05:10 #5 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 3·52·107 Posts Jilly's third law: The worse the haircut, the slower it grows out. Jilly's second law (IIRC): Windspeed is proportional to the cost of the hairdo. Does anyone have the formulae for these?
 2012-12-05, 01:08 #6 Dubslow Basketry That Evening!     "Bunslow the Bold" Jun 2011 40 0: print("days, hours, mins, secs") elif hours > 0: print("hours, mins, secs") else: print("mins, secs")
2012-12-08, 07:20   #7
markr

"Mark"
Feb 2003
Sydney

10001111012 Posts

This is even less like a formula; I came across it as one of the many corollaries of Murphy's Law. It went something like this:
Quote:
 To estimate the time a task will take, start with how long you think it should take, multiply by two and change to the next higher unit. So a one hour task will take two days.

2012-12-08, 07:51   #8
retina
Undefined

"The unspeakable one"
Jun 2006
My evil lair

3×1,811 Posts

Quote:
 Originally Posted by Uncwilly ... p = constant (5.7 in United_States customary units) ...
Erm ... is that supposed to be the average length of some body part (5.7 in. ~= 145mm)?

2012-12-08, 17:40   #9
Uncwilly
6809 > 6502

"""""""""""""""""""
Aug 2003
101×103 Posts

3·52·107 Posts

Quote:
 Originally Posted by retina Erm ... is that supposed to be the average length of some body part (5.7 in. ~= 145mm)?
No, just a constant.

 2012-12-10, 05:32 #10 Dubslow Basketry That Evening!     "Bunslow the Bold" Jun 2011 40>> for i in range(50, 101): ... nt.divisors(i) ... [1, 2, 5, 10, 25, 50] [1, 3, 17, 51] [1, 2, 4, 13, 26, 52] [1, 53] [1, 2, 3, 6, 9, 18, 27, 54] [1, 5, 11, 55] [1, 2, 4, 7, 8, 14, 28, 56] [1, 3, 19, 57] [1, 2, 29, 58] [1, 59] [1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60] [1, 61] [1, 2, 31, 62] [1, 3, 7, 9, 21, 63] [1, 2, 4, 8, 16, 32, 64] [1, 5, 13, 65] [1, 2, 3, 6, 11, 22, 33, 66] [1, 67] [1, 2, 4, 17, 34, 68] [1, 3, 23, 69] [1, 2, 5, 7, 10, 14, 35, 70] [1, 71] [1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72] [1, 73] [1, 2, 37, 74] [1, 3, 5, 15, 25, 75] [1, 2, 4, 19, 38, 76] [1, 7, 11, 77] [1, 2, 3, 6, 13, 26, 39, 78] [1, 79] [1, 2, 4, 5, 8, 10, 16, 20, 40, 80] [1, 3, 9, 27, 81] [1, 2, 41, 82] [1, 83] [1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84] [1, 5, 17, 85] [1, 2, 43, 86] [1, 3, 29, 87] [1, 2, 4, 8, 11, 22, 44, 88] [1, 89] [1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90] [1, 7, 13, 91] [1, 2, 4, 23, 46, 92] [1, 3, 31, 93] [1, 2, 47, 94] [1, 5, 19, 95] [1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96] [1, 97] [1, 2, 7, 14, 49, 98] [1, 3, 9, 11, 33, 99] [1, 2, 4, 5, 10, 20, 25, 50, 100]
 2012-12-10, 06:35 #11 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 3·52·107 Posts Dub, please re-read the first few posts. Your's have been off topic. Paul has gotten the right understanding.

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