Edurete.org

Direct Proportion
The formal definition of direct proportion:
two quantities, A and B, are in direct proportion if by whatever factor A changes, B changes by the same factor.
Segnalato da: Sabrina Pastorelli
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http://id.mind.net/~zona/mstm/physics/mechanics/forces/directProportion/directProportion.html

The direct proportional function y = mx
A relationship between two variables in which one is a constant multiple of the other. In particular, when one variable changes the other changes in proportion to the first.
If b is directly proportional to a, the equation is of the form b = ka (where k is a constant).

Segnalato da: Sabrina Pastorelli
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http://kr.cs.ait.ac.th/~radok/math/mat1/mat121.htm

GRAPHING SIMPLE FUNCTIONS
The mathematical concept of a function expresses dependence between two quantities, one of which is given (the independent variable, argument of the function, or its "input") and the other produced (the dependent variable, value of the function, or "output"). A function associates a single output to each input element drawn from a fixed set, such as the real numbers.

Segnalato da: Sabrina Pastorelli
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http://www.physics.uoguelph.ca/tutorials/GSF/

FUNCTIONS
A relationship between two variables, typically x and y, is called a function, if there is a rule that assigns to each value of x one and only one value of y.

Segnalato da: Luisa Demonte Barbera
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http://www.themathpage.com/aPreCalc/functions.htm

Function of inverse proportionality y = m/x
In inverse proportionality, the product of corresponding values is constant. The functional equation is y = m/x.
Segnalato da: Luisa Demonte Barbera
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http://kr.cs.ait.ac.th/~radok/math/mat1/mat124.htm#Function%20of%20inverse%20proportionality%20y%20=%20m/x

Inverse Proportion
A relationship between two variables in which the product is a constant. When one variable increases the other decreases in proportion so that the product is unchanged.
If b is inversely proportional to a, the equation is of the form b = k/a (where k is a constant).

Segnalato da: Luisa Demonte Barbera
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http://id.mind.net/~zona/mstm/physics/mechanics/forces/inverseProportion/inverseProportion.html

Motion with constant velocity
The simplest type of motion (excluding the trivial case in which the body under investigation remains at rest) consists of motion with constant velocity.
This type of motion occurs in everyday life whenever an object slides over a horizontal, low friction surface: e.g., a puck sliding across a hockey rink.
Segnalato da: Luisa Gibello
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http://farside.ph.utexas.edu/teaching/301/lectures/node17.html

The Uniform Velocity Motion
The easiest examples of motion are the uniform velocity motion (constant velocity), and the uniform acceleration motion (constant acceleration). In these two cases it’s easy to deduce the analytic laws which rule the motion, and a complete description of motion can be pointed out.
This is a motion during which the instantaneous velocity is always constant.
Hence acceleration is zero.

Segnalato da: Luisa Gibello
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http://digilander.libero.it/mfinotes/IIIEuropeo/Physics/kinematic4.htm

Uniform motion in a straight line
Uniform motion is defined as constant motion in a straight line. Any motion that is not in a straight line or not at a constant speed is non-uniform motion.

Segnalato da: Luisa Gibello
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http://galileoandeinstein.physics.virginia.edu/lectures/vectors.htm

Circular Motion
Uniform circular motion describes motion in which an object moves with constant speed along a circular path.

Segnalato da: Sabrina Pastorelli
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http://www.mcanv.com/p1cmot.html

Average Velocity
The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time.
Segnalato da: Sabrina Pastorelli
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http://hyperphysics.phy-astr.gsu.edu/hbase/vel2.html

Acceleration
Acceleration is a change of velocity divided by a change of time so it has units of (meters/second)/second. As with the velocity, we can describe the average acceleration or we can describe the instantaneous acceleration.
Segnalato da: Sabrina Pastorelli
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http://www.ux1.eiu.edu/~cfadd/1150/02-1DMtn/Accel.html

Negative Acceleration
When an object is slowing down, the acceleration is in the apposite direction as the velocity. Thus, this object has a negative acceleration.
Segnalato da: Luisa Demonte Barbera
**
http://www.glenbrook.k12.il.us/gbssci/phys/Class/1DKin/U1L1e.html

Uniformly Accelerated Motion
Uniform, or constant, acceleration is a type of motion in which the velocity of an object changes equal amounts in equal time periods.
Segnalato da: Luisa Gibello
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http://en.wikipedia.org/wiki/Uniform_Acceleration

Simple Harmonic Motion
Simple harmonic motion is typified by the motion of a mass on a spring when it is subject to the linear elastic restoring force given by Hooke's Law. The motion is sinusoidal in time and demonstrates a single resonant frequency.
Segnalato da: Sabrina Pastorelli
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http://hyperphysics.phy-astr.gsu.edu/hbase/shm.html

Equations of Circunference
The linked page shows the circunference equations and the graphic representations.
Segnalato da: Luisa Demonte Barbera
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http://regentsprep.org/REgents/math/conics/LCir.htm

The Nobel Prize in Physiology or Medicine 1907
Il sito contiene una biografia del medico Alphonse Laveran che scoprì l'agente eziologico della malaria.
Segnalato da: n.campo@tiscali.it
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http://nobelprize.org/nobel_prizes/medicine/laureates/1907/index.html

Laveran, Charles-Louis-Alphonse
Biografia del fisiologo francese Alphonse Laveran, insignito del premio Nobel per aver identificato l'agente eziologico delle febbri malariche.
Segnalato da: Nadia Campofiorito
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http://it.encarta.msn.com/encyclopedia_761577597/Laveran_Charles-Louis-Alphonse.html

Alphonse Laveran (1845-1922)
Cronologia dettagliata della vita di Alphonse Laveran, fisiologo francese che identificò l'agente eziologico della malaria.
Segnalato da: Nadia Campofiorito
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http://www.pasteur.fr/infosci/archives/lav0.html

Charles Louis Alphonse Laveran (1845-1922)
Biografia e principali opere del medico Alphonse Laveran che identificò l'agente eziologico della malaria.

Segnalato da: Nadia Campofiorito
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http://www.historiadelamedicina.org/laveran.html

La tundra
Descrizione del bioma tundra
Segnalato da: Dalmasso Chiara
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http://www.eniscuola.net/testo.aspx?id=24

Science et technique dans la France moderne
Mappa concettuale dell'unità:
Science et technique dans la France moderne
Segnalato da: Chiara Silvestro, Emanuela Orsi
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http://www.edurete.org/public/upload/sciencetechnique.htm

Chameau
Un animal spécial au service
de l'humanité: le chameau

Segnalato da: Ristorto Marcello
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http://www.harunyahya.fr/articles/article06_animal.php

Le Sahara
Depuis quand le Sahara est-il un désert?
Segnalato da: Ristorto Marcello
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http://www.futura-sciences.com/fr/sinformer/actualites/news/t/terre-3/d/depuis-quand-le-sahara-est-il-un-desert_8228/

Climat
Le climat correspond à la distribution statistique des conditions atmosphériques dans une région donnée pendant une période de temps donnée.
Segnalato da: Ristorto Marcello
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http://fr.wikipedia.org/wiki/Climat

anatomia del muscolo
tipologie muscolari, forma del muscolo
Segnalato da: tibaldi laura
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http://www.baldoalberti.it/01personaltraining/accennifit06.htm

tipologie muscolari
descrizione delle varie forme dei muscoli
Segnalato da: tibaldi laura
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http://www.nonsolofitness.it/argomenti/anatomia.asp?ant=6

muscoli del cranio
elenco e descrizione dei muscoli del cranio
Segnalato da: tibaldi laura
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http://www.nonsolofitness.it/argomenti/anatomia.asp?ant=13

muscoli del torace
elenco e descrizione dei muscoli del torace
Segnalato da: tibaldi laura
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http://www.nonsolofitness.it/argomenti/anatomia.asp?ant=31

muscoli del tronco
elenco e descrizione dei muscoli del tronco
Segnalato da: tibaldi laura
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http://www.nonsolofitness.it/argomenti/anatomia.asp?ant=32

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