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'Techne/Shiffman: The Nature of Code'에 해당되는 글 3건

  1. 2007.04.20 [Shiffman] The Nature of Code - Oscillation
  2. 2007.02.27 [Shiffman] The Nature of Code - Forces
  3. 2007.02.16 [Shiffman] The Nature of Code - Vectors

[Shiffman] The Nature of Code - Oscillation

2007. 4. 20. 03:27 Techne/Shiffman: The Nature of Code
http://www.shiffman.net/teaching/nature/waves/


 Vibration
http://www.lightandmatter.com/html_books/3vw/ch01/ch01.html


 Euler's Theorem
The general displacement of a rigid body with one point fixed is a rotation about some axis. This requires that one eigenvalue equals 1.


 Simple harmonic Oscillation
A simple harmonic oscillator is an oscillating system which satisfies the following properties.

    1. Motion is about an equilibrium position at which point no net force acts on the system.
    2. The restoring force is proportional to and oppositely directed to the displacement.
    3. Motion is periodic.

     Simple Harmonic Motion
    http://en.wikipedia.org/wiki/Simple_harmonic_motion
    * Isochronous


 Harmonic Oscillation

http://en.wikipedia.org/wiki/Harmonic_oscillation


'Techne > Shiffman: The Nature of Code' 카테고리의 다른 글

[Shiffman] The Nature of Code - Forces  (0) 2007.02.27
[Shiffman] The Nature of Code - Vectors  (0) 2007.02.16
posted by maetel

[Shiffman] The Nature of Code - Forces

2007. 2. 27. 23:15 Techne/Shiffman: The Nature of Code


my preparation for RB study:
 weight vs. mass http://en.wikipedia.org/wiki/Weight
= absolute vs. relative

gravitational force
http://en.wikipedia.org/wiki/Gravitational_force
Earth's gravity http://en.wikipedia.org/wiki/Earth%27s_gravity
    Free fall http://en.wikipedia.org/wiki/Free-fall

     지구의 반지름
    에라토스테네스 (Eratosthenes, 276 BC - 194 BC) http://100.naver.com/100.nhn?docid=110548
        http://en.wikipedia.org/wiki/Eratosthenes
        cf. 에라토스테네스의 체 (Erathosthenes'sieve) http://100.naver.com/100.nhn?docid=716415


     지구의 질량

    ref.
    http://en.wikipedia.org/wiki/History_of_gravitational_theory

        브라마굽타 [Brahmagupta, 598~665?] http://100.naver.com/100.nhn?docid=80291
            http://en.wikipedia.org/wiki/Brahmagupta
 

 force
http://en.wikipedia.org/wiki/Force
Force is defined as the rate of change of momentum with time:    \vec{F} = {\mathrm{d}\vec{p} \over \mathrm{d}t}.
The quantity \vec{p} = m \vec{v} (where m\, is the mass and \vec{v} is the velocity) is called the momentum. This is the only definition of force known in physics (first proposed by Newton himself). If the mass m is constant in time, then Newton's second law can be derived from this definition

http://en.wikipedia.org/wiki/Net_force

Newton’s Laws
제1법칙 - 관성의 법칙
제2법칙 - 가속도, 질량, 힘
제3법칙 - 작용/반작용의 법칙
http://www.lightandmatter.com/html_books/1np/ch04/ch04.html
http://www.physicsclassroom.com/Class/newtlaws/newtltoc.html

dissipative force - friction force, viscious force
gravitational force

momentum

torque <- rotation

stress <- deformation


Viscosity
http://en.wikipedia.org/wiki/Viscosity



 Friction
Hook's Law

spring

pendulum



cf.
http://en.wikipedia.org/wiki/Deformation











'Techne > Shiffman: The Nature of Code' 카테고리의 다른 글

[Shiffman] The Nature of Code - Oscillation  (0) 2007.04.20
[Shiffman] The Nature of Code - Vectors  (0) 2007.02.16
posted by maetel

[Shiffman] The Nature of Code - Vectors

2007. 2. 16. 16:23 Techne/Shiffman: The Nature of Code


my preparation for RB study:

scalar vs. vector

  vector http://en.wikipedia.org/wiki/Vector_%28spatial%29

  eg. speed vs. velocity http://en.wikipedia.org/wiki/Velocity

      http://www.scienceaid.co.uk/physics/forces/motion.html

  eg. distance (;path) vs. displacement http://en.wikipedia.org/wiki/Displacement_%28vector%29

http://en.wikipedia.org/wiki/Distance


coordinate & origin

  Cartesian coordinate http://en.wikipedia.org/wiki/Cartesian_coordinate_system

  (cf. 일반 상대성 이론에서 stress-energy 이론에 의해 코디네이트에 변형이 가해져 물리적 운동과 코디네이트의 일치가 깨지는 현상 소개) 


s(displacement) vs. v(velocity) vs. a(acceleration)

http://en.wikipedia.org/wiki/Position_vs._time_graph


normalization 

unit vector http://en.wikipedia.org/wiki/Unit_vector

  (ref. normalization (wave fn.) http://en.wikipedia.org/wiki/Normalisable_wavefunction

                   http://en.wikipedia.org/wiki/Normed_vector_space

 



Object Oriented Programming refers to art of breaking down a program into a set of self-contained parts.

Before we can begin to code any simple physics / motion simulation, we need to create a template class to store the data and perform the calculations associated with a vector.


"The term object-oriented design refers to the art of decomposing an application into some number of objects, self-contained application components that work together. The goal is to break your problem down into a number of smaller problems that are simpler and easier to handle and maintain."
-- Learning Java, Neimeyer, Knudsen 


In processing, a class is a "blueprint" or "template" for the creation of an object.

http://itp.nyu.edu/icm/shiffman/week3/index.html



A method is a name for an action. http://codeguru.earthweb.com/java/tij/tij0050.shtml

Method overloading is essential to allow the same method name to be used with different argument types. And although method overloading is a must for constructors, it’s a general convenience and can be used with any method.


instance methods / static methods


An example in the Processing library is an external Java class.
(cp. An internal Java class is a sketch in Processing.)


http://www.shiffman.net/itp/classes/nature/library/Vector3D.java

http://www.shiffman.net/teaching/nature/library/


Access Level  to Members of a Class - public, private, protected, or package-private (no explicit modifier)

http://java.sun.com/docs/books/tutorial/java/javaOO/accesscontrol.html



ref.

Kinematics 운동학: 운동의 원인과는 상관없이 물체의 움직임만을 분석
http://en.wikipedia.org/wiki/Kinematics


the html version of Newtonian Physics, by Benjamin Crowell
http://www.lightandmatter.com/html_books/1np/ch03/ch03.html


Galileo Galilei

http://en.wikipedia.org/wiki/Galileo_Galilei

http://www.physicsclassroom.com/




hellomotion http://www.shiffman.net/itp/classes/nature/week02_s06/motion101/hellomotion.pde


boolean (<-Thing에서의 if문) <= "flag"

http://en.wikipedia.org/wiki/Boolean


keyword (/reserved word 예약어) - eg. width, height, PI 


constructor (생성자)


NaN = Not a Number (숫자가 아닌 값)


HeadFirst Java

2장 - 객체: constructor(생성자), method(함수), property(변수, 객체)

cf. instance


Head 2 - 클래스와 객체



'Techne > Shiffman: The Nature of Code' 카테고리의 다른 글

[Shiffman] The Nature of Code - Oscillation  (0) 2007.04.20
[Shiffman] The Nature of Code - Forces  (0) 2007.02.27
posted by maetel

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