Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
electromagnetic wave
24.1 |
a wave of oscillating electric and magnetic fields that moves at the speed of light - example (light)
|
|
electromagnetic spectrum
24.1 |
the entire range of electomagnetic waves including all possible frequencies
|
|
radio wave
24.1 |
are the lowest-frequency waves. They have wavelengths that range from kilometers down to tens of centimeters
|
|
microwave
24.1 |
range in length from approximately 30 cm to about 1mm (thickness of pencil lead)
|
|
infrared light
24.1 |
includes wavelengths from 1 mm to about 700 nanometers
|
|
visible light
24.1 |
has wavelengths between 700 and 400 nanometers and includes all the colors of light (ROYG-BV) we see when white light is split by a prism
|
|
ultraviolet light
24.1 |
has a range of wavelengths from 10 to 400 nanometers. Has enough energy to remove electrons and break chemical bonds
|
|
x rays
24.1 |
are high frequency waves that are used extensively in medical and manufacturing applications. Their wavelength range i from about 10 nanometer to about 0.001nm.
|
|
gamma rays
24.1a |
have wavelengths of less than about ten-trillionths of a meter. They are generated in nuclear reactors, and are used in many medical applications. They can push even the inner electrons right out of an atom and completely disrupt chemical bonds
|
|
diffraction grating
24.2 |
an optical device with a series of thin, parallel grooves that creates an interference pattern of light
a series of parallel groves on a piece of glass or plastic |
|
diffraction pattern
24.2 |
the interference pattern of bright and dark bands of light created by a diffraction grating
the series of bright spots on either side of the central bright spot |
|
polarizer
24.2 |
a device or material that polarizes lightly by allowing light of only one polarization through
|