Class EmissionApplet.Electron

java.lang.Object
  |
  +--EmissionApplet.Electron

Direct Known Subclasses:

FourLevels.Electron

Enclosing class:

EmissionApplet

public class EmissionApplet.Electron

extends java.lang.Object

Models an electron

Field Summary

protected boolean	excited
protected double	progress
protected double	x

Constructor Summary

EmissionApplet.Electron(double x)
Creates a new (non-excited) electron

Method Summary

void	absorb(EmissionApplet.Photon p) Absorbs the specified photon, causing this electron to become excited.
boolean	canAbsorb() Indicates whether this electron is in a suitable state to absorb a photon.
boolean	canEmit() Indicates whether this electron is in a suitable state for stimulated emission of a photon.
void	emit(EmissionApplet.Photon p) Emits the specified photon, causing this electron to become non-excited.
boolean	isExcited()
boolean	isMoving()
void	paint(java.awt.Graphics g, double xscl, double yscl) Displays this Electron
void	pump() Moves this electron to the upper energy level
void	setExcited(boolean b) Immediately (without animation) moves this electron to the specified energy level.
void	update(double dt) Advances this photon through time by the specified interval

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

excited

protected boolean excited

x

protected double x

progress

protected double progress

Constructor Detail

EmissionApplet.Electron

public EmissionApplet.Electron(double x)

Creates a new (non-excited) electron

Parameters:

x - The x position

Method Detail

paint

public void paint(java.awt.Graphics g,
                  double xscl,
                  double yscl)

Displays this Electron

Parameters:

g - The Graphics surface on which to paint

xscl - Multiplier to convert simulation x coordinates to screen coordinates

yscl - Multiplier to convert simulation y coordinates to screen coordinates

isExcited

public boolean isExcited()

Returns:

true if this electron is excited, else false

absorb

public void absorb(EmissionApplet.Photon p)

Absorbs the specified photon, causing this electron to become excited.

emit

public void emit(EmissionApplet.Photon p)

Emits the specified photon, causing this electron to become non-excited.

isMoving

public boolean isMoving()

Returns:

true if this electron is in transition between energy levels, false if this electron is stationary.

canAbsorb

public boolean canAbsorb()

Indicates whether this electron is in a suitable state to absorb a photon.

canEmit

public boolean canEmit()

Indicates whether this electron is in a suitable state for stimulated emission of a photon.

update

public void update(double dt)

Advances this photon through time by the specified interval

pump

public void pump()

Moves this electron to the upper energy level

setExcited

public void setExcited(boolean b)

Immediately (without animation) moves this electron to the specified energy level.

Parameters:

b - true if the electron is to be moved to the upper energy level, false if the electron is to be moved to the lower energy level.