When any process receives stimulus, it begins to spread from epicenter.
Direction of this process depends on presence of obstacles and from location of the epicenter in the space.
The wave can spread either in one certain vector or right and left.
Gradually the wave will lose its power, when stumbling upon obstacles, till it completely sputters out.
No matter what nature the wave has, it will behave the same way. Waves can be smooth and pleasant, but they can be devastating as well.
Terms Light, Sound and Color are closely connected with waves.
Such a phenomenon shows us that none can be considered only from the negative or positive point of view.
For example, the light source can be either the engine for progress, or expensive optical toy.
Light however can be harmful as well, especially some of its spectres.
Speaking of specters, by the way. If you just whirl a CD in your hand, you yourself will see what the light looks like, showing you its colors. Yet, one can see the process of refraction in greater scales. A rainbow for example.
The Universe consists of great variety of sources of light and energy: quazars, pulsars, and alien remote Suns, whose light yet can be seen with Hubble, the eye of our planet.
Which is a beauty for a usual man, for physicians is just a subjective perception of light within visible range. There is such a term as "daltonism". People can see, but see now colors or only some particular one. Imagine, how it is - to see the life in grey tons. Or in pink ones. Though, some of people see the life in such colors even without being daltonians.
Roy G. Biv.
Sounds are everywhere. Even when we do not hear them, it does not mean that there is no sound. For example, people can not hear ultrasound, but cats and dogs can hear it rather clearly.
Timbre. Frequency. Tone. Notes. Accord. Music.
is a quality of a musical note or sound or tone. that distinguishes different types of sound production, such as voices and musical instruments, string instruments, wind instruments, and percussion instruments.
Tone is a - is a musical interval spanning two semitones, and encompassing two adjacent staff positions. The term "tone" also refers to color. To be more exact, it is one of the basic properties of color. Tone of the same object can be perceived in different ways by different animals.
A, B, C, D, E, F and G.
Note is a graphic symbol, denoting relative duration and pitch of a sound, one of the basic symbols of musical notation.
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