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Pi in the Sky Over New York

7/30/2014 02:22 PM EDT
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y_sasaki
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CEO
355/113
y_sasaki   7/30/2014 7:28:18 PM
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355/113 is 3.1415929203... Pretty much close to Pi (3.141592653589...). When you have to deal with Pi with 8 or 16bit embedded MCU, multiply with 355 then divide by 113 can be a good-ehough substitute of Pi :-)

Sheepdoll
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22/7
Sheepdoll   7/30/2014 10:26:22 PM
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A number of my old engineering text books from the slide rule days give 22/7 as a shortcut to pi.  Good to 5 digits of accuracy, which most sin/cos tables were composed to.

My class (those born in 1960) were probably the last group in the high school system to be taught slide rule.  In my first year of college one professor considered calculators to be a form of cheating.

 

prabhakar_deosthali
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CEO
Novel way of teaching maths
prabhakar_deosthali   7/31/2014 2:34:50 AM
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This is a good combination of Science, technology and Nature.

Anyone who saw this wil never forget the constant PI , in his/her lifetime.

 

junko.yoshida
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STEAM
junko.yoshida   7/31/2014 4:37:31 AM
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A very cool story, Jessica! I agree...adding "Art" to STEM makes the wonder of science so much more accessible to the masses!

wilber_xbox
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Re: Novel way of teaching maths
wilber_xbox   7/31/2014 4:38:17 AM
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This is cool and high-tech display of geeky things.

kfield
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Crowd reaction
kfield   7/31/2014 8:39:20 AM
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Totally, totally cool. I wonder how many people knew what they were seeing when they looked up at it? 

Wnderer
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CEO
201/64
Wnderer   7/31/2014 9:54:07 AM
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If you're dealing with a simple processor and integer math, 201/64 can use bit shifts for divisions. You can use Num * 201 >> 6 (divide by 64)  or Num * 201 << 2 (multiply by 4) and drop the low byte.

 There is also 3217>>10 but you will need to have large enough variables to handle the 3217 multiply.

Jessica Lipsky
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Author
Re: STEAM
Jessica Lipsky   7/31/2014 10:50:29 AM
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Agreed!  The more I hear about the necisity of adding a fashion component to wearables (and fashion can be art!), the more I think about STEAM v. STEM.

Susan Rambo
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Re: Novel way of teaching maths
Susan Rambo   7/31/2014 11:18:50 AM
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I wonder how much this cost. Pretty clever --  a lot of coordination must have gone into this.

elctrnx_lyf
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Manager
Re: Novel way of teaching maths
elctrnx_lyf   7/31/2014 1:00:21 PM
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Just imagine how many vegetables were used to produce this vegetable oil.

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