Breaking News
News & Analysis

# Pi in the Sky Over New York

7/30/2014 02:22 PM EDT
NO RATINGS
Page 1 / 2   >   >>
User Rank
Author
355/113
7/30/2014 7:28:18 PM
NO RATINGS
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 :-)

User Rank
Author
22/7
7/30/2014 10:26:22 PM
NO RATINGS
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.

User Rank
Author
Novel way of teaching maths
7/31/2014 2:34:50 AM
NO RATINGS
This is a good combination of Science, technology and Nature.

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

User Rank
Author
STEAM
7/31/2014 4:37:31 AM
NO RATINGS
A very cool story, Jessica! I agree...adding "Art" to STEM makes the wonder of science so much more accessible to the masses!

User Rank
Author
Re: Novel way of teaching maths
7/31/2014 4:38:17 AM
NO RATINGS
This is cool and high-tech display of geeky things.

User Rank
Author
Crowd reaction
7/31/2014 8:39:20 AM
NO RATINGS
Totally, totally cool. I wonder how many people knew what they were seeing when they looked up at it?

User Rank
Author
201/64
7/31/2014 9:54:07 AM
NO RATINGS
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.

User Rank
Author
Re: STEAM
7/31/2014 10:50:29 AM
NO RATINGS
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.

User Rank
Author
Re: Novel way of teaching maths
7/31/2014 11:18:50 AM
NO RATINGS
I wonder how much this cost. Pretty clever --  a lot of coordination must have gone into this.

User Rank
Author
Re: Novel way of teaching maths
7/31/2014 1:00:21 PM
NO RATINGS
Just imagine how many vegetables were used to produce this vegetable oil.

Page 1 / 2   >   >>