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The Science of Homeopathy – page 75

 

Amplitude

 

 

 

 

 

 

 

Wavelength

 

Figure 5: A diagram representing one complete cycle. The height is called the “ampli- tude” and is one measure of the force of the wave. The horizontal length is called the “wavelength.” Because the speed of propagation is constant, wavelength and frequency are interchangeable terms.

 

server first to move in one direction, then it appears to move back to its original location. In Figure 5, we see a typical waveform characterized first by motion in a “positive” direction, then in a “negative” direction. one complete wave is called a cycle.

The concept of waves is familiar to all of us. In water, a wave is characterized by motion of molecules upward (to a crest) and down- ward (to a trough), and back again. A piece of paper floating on the surface will remain in the same spot as the wave passes, yet the wave itself moves on. A pebble thrown into a pond transmits force to the wa- ter which results in a wave radiating outward from the point of impact. The piece of paper remains stationary, while the force of the wave is nevertheless radiated throughout the pond. Another familiar example is sound waves; sound waves cause air molecules to move back and forth in relation to each other, thus propagating the force of the sound over a distance. Electromagnetic waves transmit force as well, but these waves can be transmitted even in a vacuum and over great dis- tances.

The speed of propagation of such waves is characteristic for the type of substance it is traveling in. Sound waves at sea level travel at a constant speed, the speed of sound. Electromagnetic waves travel at the speed of light.

There are three basic parameters defining a waveform: frequency (measured commonly in cycles per second), wavelength (measured commonly in centimeters or meters), and amplitude (measured in units of force).

The “frequency” of vibration is described as the number of waves, or “cycles,” per unit of time. Thus, we may see a vibration rate of one