Tuesday, July 19, 2011

Saturday, April 17, 2010

Alice/Algebra in Wonderland

Have to read the book again, with these perpective in mind...
clipped from www.nytimes.com
Alice’s adventures
have often been assumed to be based purely on wild imagination
Yet Dodgson most likely had real models for the strange happenings
Alice has slid down from a world governed by the logic of universal arithmetic to one where her size can vary from nine feet to three inches
“Being so many different sizes in a day is very confusing.”
No, it isn’t, replies the Caterpillar, who comes from the mad world of symbolic algebra
“Keep your temper.”
In Dodgson’s day, intellectuals still understood “temper” to mean the proportions in which qualities were mixed
so the Caterpillar is telling Alice not to avoid getting angry but to stay in proportion
clipped from www.nytimes.com
“A Mad Tea-Party,” we should read tea-party as t-party, with t being the mathematical symbol for time
At the mad tea party, time is the absent fourth presence at the table
How do we know for sure that “Alice” was making fun of the new math?
Dodgson rarely wrote amusing nonsense
Math gave “Alice” a darker side
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Monday, April 5, 2010

Attempts to Restore Vision

Researchers worldwide are trying to find ways to use electronics to improve visual recognition.
clipped from www.wired.com
bionic-eye-australia
Bionic Vision Australia, has developed a device called the wide-view neurostimulator
Bionic Vision Australia uses an external camera
An electrode array is implanted in the eye and that connects to the central part of the retina where the greatest number of retinal neurons are present
An external unit has vision-processing software to help generate the electrical impulses.
The resultant vision is not the same as the images that a sighted person sees
it’s a pixelated version with a relatively small number of dots: about 100 in early versions
bionic-eye-australia3
team hope to do the first human implant in 2013
groups in Germany and Japan are working on similar projects
clipped from www.wired.com
MIT work on a retinal implant that can bypass damaged cells and directly offer visual input to the brain
retinal-implant3
It won’t entirely restore normal vision, say the researchers, but it will offer just enough sight to help a blind person navigate a room
The eyeball holds a microchip encased in a sealed titanium case
retinal-implant2
clipped from review.ucsc.edu
image
Wentai Liu
clipped from www.wired.com
Frank W. Ockenfels 3
Frank W. Ockenfels 3
The Dobelle artificial vision system
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Saturday, March 20, 2010

Effect of Calcium on Iron absorption...

I wanted to know, once and for all, if calcium had an effect on iron absorption. We usually consume yoghurt with meat, which is our main iron-supply.

This new paper (2010), that takes into account various other studies, concludes:
"calcium in amounts present in many meals inhibits the absorption of both heme and nonheme iron".

Guess we'll have to change this eating-habit of ours...

Wednesday, March 17, 2010

"Procrastination" Tales Of Mere Existence

Now why does that sound familiar
In fact, I just vacuumed my room, so it wouldn't distract me while I get my stuff done
clipped from www.youtube.com
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Friday, March 5, 2010

Applying Mathematics To Web Design

Some interesting ideas and sample psd-layouts.
“Mathematics is beautiful.”

Golden Ratio and Golden Rectangle

Gr01 in Applying Mathematics To Web Design
A golden rectangle is one whose side lengths have the golden ratio 1:(one-to-phi); that is, 1:1.618
Rectangle in Applying Mathematics To Web Design
Spacegeek Full in Applying Mathematics To Web Design
Spacegeek Rect05 in Applying Mathematics To Web Design
a sample PSD layout that is designed according to the Golden Ratio and Golden Rectangle

Fibonacci Design

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144...
Fib in Applying Mathematics To Web Design
Fibonacci01 in Applying Mathematics To Web Design
Fibonacci02 in Applying Mathematics To Web Design
a sample PSD layout that is designed according to the Fibonacci sequence

Five Elements, Or Kundli Design

Kundlilayout in Applying Mathematics To Web Design
Kundlilayout02 in Applying Mathematics To Web Design
Fiveelements01 in Applying Mathematics To Web Design
Fiveelements03 in Applying Mathematics To Web Design
a sample PSD layout that is designed according to the Kundli design

Sine Wave Design

Sw01 in Applying Mathematics To Web Design
Sinewave01 in Applying Mathematics To Web Design
Sinewave02 in Applying Mathematics To Web Design
a sample PSD layout that is designed according to the Sine Wave design

Other Techniques

Rule of Thirds
Musical Logic
Learn more about music and mathematics in this Wikipedia article.
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Playing to learn math

Fun math games

Chemistry games

  • Learn element names, facts and symbols with Element Quiz
  • Learn to balance chemical equations with Classic Chembalancer
  • Algebra games

  • Learn to draw linear equations by finding points with the Line Gem 1 game.
  • clipped from www.mangahigh.com

    Basic Shapes to Advanced Geometry

    Ordering Decimals, Fractions & Percentages

    All of the incredible maths games on Mangahigh can be played for free!

    Playing to learn math?

    Playing to Learn Math? on Prezi

  • Wolfram|Alpha: Recalculating Teaching & Learning
  • Brightstorm’s Math Video Library
  • Compounding Fun with Vector TD
  • Prime Number Manipulatives
  • Chain Factor
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