"Unfortunately, no one can be told what the matrix is --- you have to see it for yourself." --- Orpheus, from the Matrix
Nearly everything about our world can be traced back to electric charge interaction.
Chemistry is the study of electric charge interaction.
Physiology is the study of electric charge interaction.
Geology is the study of electric charge interaction.
Our perception with the world around us comes via the electric charge interaction.
On
Intelligence
by
Jeff Hawkins and Susan Blakeslee
Patterns of spatial and temporal
electrical signals are the most
fundamental currency of intelligence.
The Senses 1,2,3
The Brain 1,2,3
Electrostatic
Interactions
'stationary charge interactions'
The Electric Charge
The Electric Force
The Electric Field
Our world is the manifestation
the simple dance of electrons
inside and between atoms and molecules.
Physics 196 material
What
is Electricity?
The atom is mostly
space!
Each atom is as old as the universe!
Mechanical Universe - Electric Charge
Like
and Unlike Charges
Positive and Negative Charges
Insulators and Conductors
Every material in the world can be defined in terms of how well it conducts electricity
Certain things, such as cold glass, never conduct electricity. They're known as insulators. Materials which do conduct electricity, like copper, are called conductors. In the middle are materials known as semiconductors, which don't conduct as well as conductors, but can carry current. Last, are materials called superconductors, which when brought down to very low temperatures turn into superhighways of current -- they conduct electricity without any resistance whatsoever.
What did J.J. Thompson say about the electron---listen to it?
in our minds. . .
How many electrons in make
one Coulomb of charge?
Coulomb's
Law
The magnitude of the Force between two point charges
is directly proportional to the product of their charges
and inversely
proportional to the square of the
distance between them.
When
the distance between the charges doubles,
the force decreases to a fourth of its initial value.
How does the Electric Force compare to The Gravitational Force? Use an electron for an example.
What if one was to triple the separation distance. . .what would happen to the force?
What if one was to cut the separation distance in half?
How was the constant k found?
Mechanical Universe - Electric Field
Gravitational
Forces
-vs-
Electrical Forces
Google
fights!
A few worked examples
Lines of Electric Force
We need to explain how charges 'talk' to each another charge.
So, we invent an Electric Field Lines!
Electric Field lines always begin on positive charges
and end on negative charges.
Electric Field lines communicate to other charges 'how to move'
in the presence of another charge.
Is the Electric Field real? Or, did we create it out of 'thin air'?
Will a Helium nucleus travel further than the proton? Why?
Why do the plates become charged?
Electric Fields and healing wounds?
Aluminum is a conductor.
Selenium is a photoconductor, it is an insulator in the dark and
a conductor when exposed to lightlight.
So, a positive charge deposited on the Selenium layer will stay there.
However, when the drum is esposed to light, electrons from the aluminum will pass through the conducting selenium and neutralize the positive charge.
2. Imaging the document on the drum
3. Fixing the toner
4. Transferring the toner to the paper.
Multimedia Physics Animations
HyperPhysics
Science Joy Wagon
Atomic Theory
Bohr's Atom
More fun
The Applet Collection
Electrons in Orbit
The Physics of:
Electroplating
Dennis Kunkel Microscopy
Xerography I, II
A Laser printer
Electromagnetic Field Lines
Millikan's Oil Drop Experiment
