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Posts tagged with design

Maths and the America’s Cup

March7

Dan Bernasconi, Head of Design at Emirates Team New Zealand, explains the significant role mathematics plays in sailing, boat design, and the America’s Cup. Click on the image for more info:

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Think Different – the Swing Wing

January27

Its inventor – aeronautical engineer Robert T. Jones (shown here with the Proof of Concept AD-1) from NASA’s Ames Research Center in California – was a pioneer who wanted to challenge conventions. “One of the unspoken assumptions in aircraft design is that of bilateral or mirror symmetry,” he wrote in a 1972 scientific study on […]

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America’s Cup where each millisecond counts for millions

December6

In 1851, a team from New York Yacht Club won a race around the Isle of Wight off the south coast of England. They beat 15 British boats to take the Hundred Guinea Cup, a silver trophy valued at £100. Of course, the British were ‘not amused’! Subsequently named the America’s Cup after the victorious […]

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Software to the Max

June3

The Boeing 737 Max Part II – Software design without safety: “It is astounding that no one who wrote the MCAS software for the 737 Max seems even to have raised the possibility of using multiple inputs, including the opposite angle-of-attack sensor, in the computer’s determination of an impending stall. As a lifetime member of […]

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Pure Gold in Math

April19

In Mathematics there are numbers that are like pure gold – they glow with special properties. Like the magic ring in Lord of the Rings, they release powers of the imagination and can be used to inflict their magic on those unsuspecting students who look at them too closely. Yes, we are talking about The […]

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Notre Dame – Mathematics on Fire?

April17

A very sad moment when we heard yesterday that Notre Dame cathedral was ablaze in Paris. H3 visited this amazing Gothic cathedral just a few years ago and the soaring roof detail seemed inexplicable – its heavy brick pattern seeming unsupported. Yes, this fire-proof lining may have saved the cathedral from absolute ruin. Notre Dame […]

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Math puts class into architecture

November19

The link between Mathematics and architecture goes back to ancient times. Pyramids and temples were some of the earliest examples of mathematical principles at work. Today, Mathematics continues to feature prominently in building design. Thanks to modern technology, architects can explore a variety of exciting design options based on complex mathematical formulae, allowing them to […]

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Art attracts Mathematicians in Italy

February13

The amazingly beautiful and accessible Duomo in Milan, built over some 4 centuries, was such a compelling Gothic building that it attracted many talented Mathematicians and Scientists – who wanted to study and share in the beauty and power of the Duomo. As the cathedral’s architecture became the powerhouse of intellectual culture in northern Italy, […]

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High Tension Math in Bridge Designs

October30

Mathematics is behind some wonderful new bridge designs (click image above for samples, including the use of plastic bottles), but even ancient bridges were based on arcs and circles, etc. such as this one in England    

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Mind-Boggling Math Fact #2

January19

Mathematically speaking, there’s just a finite number of distinct geometric patterns. All Escher paintings, wallpapers, tile designs and indeed all two-dimensional, and repeating arrangements of shapes can be identified as belonging to one or another of the so-called “wallpaper groups.” And how many wallpaper groups are there? Exactly 17. The classification of the wallpaper groups […]

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Post Support

Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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