ELECTRO CHAPTER 2 PART 1

RADIANT ENERGY

energy in the form of waves or rays in the ether

ether

medium imperceptible to any sense organ but exist throughout the universe where rays travel

Electromagnetic Waves

rays formed in an ether

Quantum Theory, Electromagnetic Wave Theory,

Theories:

Quantum Theory

radiant energy comes from an indivisible unit known as PHOTON

PHOTON

smallest entity of radiant energy produced by either electronic of molecular motion of high relativity or by kinetic energy released from the collision of molecules

Electromagnetic Wave Theory

energy transmitted by oscillation motion in the form of electromagnetic waves

Wavelength, Cycle, frequency, Velocity

Parameters of an Electromagnetic Waves

Wavelength

distance between adjacent crest of 2 waves

Cycle

complete sequence of events that happens upon the passing of one wave

frequency

# of oscillations or cycles per unit time

Velocity

distance traveled by wavelength per unit time

Angstrom Units

unit commonly used for measuring wavelength

SPECTRUM

an analysis of rays

SPECTRUM

analysis of electromagnetic waves & arrangement of them according to their wavelengths & properties

Electromagnetic Spectrum

arrange in order of their freq or wavelength or both

Electromagnetic Spectrum

arrangement of waves from highest to lower freq or longest wavelength to shortest wavelength

WIRELESS/ HERTZIAN WAVES

are produced by HFC

IRR, VISIBLE & UVR

are produced by heat

red rays

have the greatest wavelength