Shared Flashcard Set

Details

Intro to Media Arts
Ch 5
22
Other
Not Applicable
09/16/2007

Additional Other Flashcards

 


 

Cards

Term
examples of EM radiation
Definition
visible light in a home, radio waves from a radio station, microwaves, xrays, UV light, gamma-rays
Term
How is light measured
Definition
in wavelengths
Term
What is the electromagnetic theory?
Definition
the relationship between electricity and magnetism
Term
How fast do electromagnetic waves travel?
Definition
Speed of sound
Term
what form does an electromagnetic field travel in?
Definition
a wave
Term
Are all electromagnetic waves the same size?
Definition
no
Term
Who was the first to measure the speed of light?
Definition
Olaf Romer
Term
How did Olaf Romer measure the speed of light?
Definition
by studying the moons of Jupiter
Term
What's the speed of light?
Definition
186,000 mps
Term
How many parts is the electromagnetic spectrum composed of?
Definition
7 parts, light is one of them
Term
How much output from a lightbulb is light? how much is heat?
Definition
5% light, 95% heat
Term
What forms are EM radiation in?
Definition
wave and particle form
Term
Cosmic rays are of such high energy, that it takes what to stop them?
Definition
a few miles of solid rock
Term
Who patented the first wireless radio?
Definition
Guglielmo Marconi
Term
what was the first wireless radio used for due to lack of amplification technology?
Definition
Morse code
Term
Where was the first radio station broadcasted from
Definition
Pittsburgh, PA
Term
What was the first radio network?
Definition
NBC
Term
What's the highest and lowest frequency colors?
Definition
red - lowest
violet - highest
Term
what is the unit name when measuring lighting?
Definition
Candela
Term
Whats the unit of measurement for direct light?
Definition
lumen
Term
whats the measurement for reflected light?
Definition
foot candle
Term
Is color a property of light?
Definition
yes
Supporting users have an ad free experience!