16231662 A source of inspiration for our era Presentation plan Biography Breakthroughs Barometer Philosophy Biography Blaise Pascal born the 19th of June 1623 was a great scientific and philosopher His ID: 306214
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Slide1
Blaise Pascal(1623-1662)
A source of inspiration for our era.Slide2
Presentation plan:
BiographyBreakthroughs
Barometer
PhilosophySlide3
Biography
Blaise Pascal , born the 19th of June 1623 was a great scientific and philosopher. His
reli-gion
, the Jansenism had a big effect on him, prohibiting any satisfaction or pleasure in life , it pushed him to do more researches and
sa-crifice
more of his time on new studies which allows him to achieve new discoveries in the
field
of science.
Slide4
Pascal: the scientist
Blaise Pascal brought a lot of innovations to the science. Here we will give you a brief resume of some of his wonderful work, such as:
Mystic Hexagram;
Pascal’s calculator: “The
Pascaline
”;
Arithmetical triangle;
Probabilities.Slide5
Mystic Hexagram
This geometric figure gave us the notion of infinity. If we connect all the intersections of the opposite sides of an hexagram (which is inside a conical) we will notice that all of the points will form a straight line.Slide6
Notion of infinity: Two parallel sidesSlide7
Pascal’s calculator
This machine is the mother of the calculator and it is consecutively the base of computers.Slide8
Arithmetical triangle
Binomial coefficient : C
It represents all the possibilities to choose
p
elements from a group of
n
elements.
Example: How can we choose 3 colours of a group of 5?
The colours are: Blue, green, orange, yellow and red.
B,G,O B,O,Y G,O,Y O,Y,R
B,G,Y B,O,R G,O,R
B,G,R B,Y,R G,Y,R
Imagine now if we had to choose 4 colours from a group of 10?
It will be a long list, that’s why Pascal invented a triangle that help us
to
know
some values more quickly.
n
p
C
3
5
=
10Slide9
Arithmetical triangleSlide10
Probabilities
This concept is born thanks to games of chance such as poker because people needed to know the “chances” they had to win/loose.Equiprobability
: every elements have the same probability.
ex.: pick one card from a game of cards.
Equiprobability
: number of favourable cases
number of possible cases
Example: Probability of winning the Euro millions
C
C
C
C
5
5
5
50
2
2
2
11
x
=
116531800
1Slide11
Barometer
The first barometer was invented by Totticelle
in 1643. For his experiment he used tube, mercury and a reservoir. The same year
Blaise
Pascal continue the experience, and proved the variation of the pressure on different altitude.Slide12
Pascal: the philosopher
Beside his scientific activities, Blaise continued
being a believer .
One of his great works in philosophy was
what
we call today, Pascal's wager in which he explains that we have nothing to lose when we believe in God because we only have two choices
:
- to believe in him and if he exists we win
- to believe in him and if he doesn't exist we don't lose anything .
Those kind of views demonstrate the fact that a person can be a religious and can have a rational spirit at the same time.Slide13
Thank you for
your attention