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Flashcards in Test Deck (15):
1

Frequency

the number of cycles a wave completes in a period of time; the number of times something happens in a period of time

2

Period

one of the horizontal rows in the periodic table

3

Wavelength

the distance between one peak and the next on a wave

4

Crest

the highest point of a wave

5

Trough

the lowest point of a wave

6

Medium

an intervening substance, as air, through which a force acts or an effect is produced.

7

Amplitude

the state or quality of being ample, especially as to breadth or width; largeness; greatness of extent.

8

Longitudinal

of or relating to longitude or length

9

Spectrum

the entire spectrum, considered as a continuum, of all kinds of electric, magnetic, and visible radiation, from gamma rays having a wavelength of 0.001 angstrom to long waves having a wavelength of more than 1 million km.

10

Transverse wave

a wave in which the direction of displacement is perpendicular to the direction of propagation, as a surface wave of water.

11

Compression

(in internal-combustion engines) the reduction in volume and increase of pressure of the air or combustible mixture in the cylinder prior to ignition, produced by the motion of the piston toward the cylinder head after intake.

12

Rare fraction

the act or process of rarefying.

13

Reflection

the act of reflecting, as in casting back a light or heat, mirroring, or giving back or showing an image; the state of being reflected in this way.

14

Refraction

Physics. the change of direction of a ray of light, sound, heat, or the like, in passing obliquely from one medium into another in which its wave velocity is different.

15

Diffraction

the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a pattern of closely spaced dark and light bands (diffraction pattern) at the edge of a shadow.