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What would happen to an astronaut who leaves his spacecraft into outer space with an oxygen bottle but not wearing his space suit? Ofer
In answering this question, most science fiction films depict gory scenes in which the human body resembles a balloon that
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The Race Against the Clock: Antibiotic Resistance
For the last 80 years or so, antibiotics have repeatedly cured people of bacterial infections, from salmonella to pneumonia.
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How Does the Ebola Vaccine Work?
A year ago, West Africa was in crisis mode. The death toll from the Ebola virus had exceeded 800. Cases of the virus were
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Not Just DNA: Three Important Gene Regulators
In high school, most of us learned that DNA is the bible. It encodes all the information our bodies need to function. It is our
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Molecular Cooking: Flavor-Tripping
When Violet Beauregarde chewed the amazing gum in Willy Wonka’s chocolate factory, she felt like she was eating a three-
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Molecular Cooking: Gelification
I have a personal vendetta against gelled foods. Some of the most delicious sweets – Jell-O, marshmallows, custards, and
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Molecular Cooking: Spherification
If you’ve never thought to yourself, “I really wish I could eat apple juice that had the consistency of caviar with
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Home » Davidson Online

The math circle

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In this section you will find puzzles, articles, short films, applets and even mathamatical magic tricks.
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Head of the section: Dr. Sabine Segre
Additional writers: Amnon Zakov, Dr. Yossi Elran

Mathematical Models of Forests | Articles | 26/04/2014
Forests are very important. They create oxygen, filter the air, provide shade and prevent the ground from drying out or getting washed away in the...
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Riddle #3: Must draw a line! | Skubidu’s riddle forum | 20/11/2012
Hello there, Here is a brain-wrecking riddle suggested to us by Pinaki Mondal, a posdoctoral fellow at the department of mathematics, Weizmann...
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Weizmann Institute’s Mathematical Model May Lead to Safer Chemotherapy | Articles | 01/11/2012
The study explains why certain patients develop severe infections after chemotherapy and points to ways of averting this side-effect Cancer...
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Riddle #2: Hands on the clock! | Skubidu’s riddle forum | 31/10/2012
Hello there, We have recently "jumped" to the winter time. This is the time for a riddle regarding the clock face: Usually, the long...
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Riddle #1: a strange proof | Skubidu’s riddle forum | 29/10/2012
Hi! Check out this diagram which proves that 64 equals 65! In the top drawing, the large square, which is composed of 64 small squares, is...
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Your computer's telepathy skills | Math games | 28/10/2012
The following is a mathematical trick about some of history's greatest mathematicians. Click here to open the animation in a new window....
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Math over a cup of coffee | Articles | 24/10/2012
Have you ever noticed the patterns of light reflected from a glass of water or a cup of coffee? Image adopted from Wikipedia with permission...
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