Week 2a Chapter06 Electricity and Chapter 7 Electromagetism

Week 2a Chapter06 Electricity and Chapter 7 Electromagetism...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 6 Electricity and Chapter 7 Electromagnetism Two types of energy are important to X- ray. Electric energy Electromagnetic energy The function of the x-ray machine is to convert electrical energy to electromagnetic energy.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electricity and Magnetism Well controlled electrical energy is supplied in the form of electrical current to the x-ray tube. Inside the x-ray tube, electrical energy is converted to x-rays.
Background image of page 2
Electrostatics Matter has mass, form and an energy equivalence. Matter also has an electric charge. The electric charges associated with an electron and a proton have the same magnitude but the opposite charge.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electrostatics The electrons are often free to travel from the outer shell of one atom to another while the protons are fixed in the nucleus. Nearly all of the discussion of electric charge deals with negative charges associated with the electron.
Background image of page 4
Electrostatics Electrostatics is the study of fixed, or stationary, electric charges. Matter is electrically neutral unless loosely bound outer shell electrons are removed. Electrification can be created by contact, friction or induction. Electrification occurs because of the movement of negative electric charges.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electrostatics When a negatively electrified object comes in contact with a electrically neutral object, the negative charge is transferred to the neutral object. The earth is always available to accept the charge of the electrified object. This capacity is called electric ground .
Background image of page 6
Electrostatics Laws Unlike charges attract; like charges repel. Associated with each electrical charge is an electric field. The force of attraction or repulsion is called electrostatic force. Electrostatic force can attract or repulse while gravitation force can only attract
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Coulomb’s Law Electrostatic force is directly proportional to the product of the electrostatic charges and inversely proportional to the square of the distance between them. Electrostatic force is very strong when objects are close but rapidly decreases as the objects are moved away from each other.
Background image of page 8
Inverse Square Law Electrostatic force is inversely proportional to the square of the distance between the objects. The inverse square law also works with light, sound and intensity of radiation. It is one of the most important principles in radiology.
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electric-Charge Distribution When a diffuse nonconductor object is electrified, the charge is distributed throughout the object. i.e. Electrocution. When a conductor such as copper wire is electrified, the electrons spread over the outer surface of the wire.
Background image of page 10
In addition to traveling along the surface of a conductor, electric charges are concentrated along the sharpest curvature of the surface.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/03/2012 for the course LC 232 taught by Professor Wilson during the Fall '08 term at Palmer Chiropractic.

Page1 / 73

Week 2a Chapter06 Electricity and Chapter 7 Electromagetism...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online