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Sound and Light

Horizontales
relating to, or being a speed less than that of sound in air
an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times.
the location of objects by reflected sound, in particular that used by animals such as dolphins and bats.
subjective perception of sound pressure
allowing light, but not detailed shapes, to pass through; semitransparent
a usually tubular optical instrument for viewing distant objects by means of the refraction of light rays
has a reflecting surface that is recessed inward (away from the incident light). They are used to focus light.
Sonar is a technique that uses sound propagation to navigate, measure distances, communicate with or detect objects on or under the surface of the water,
mirror with a flat reflective surface.
allowing light to pass through so that objects behind can be distinctly seen
of or involving sound waves with a frequency above the upper limit of human hearing
not able to be seen through; not transparent.
Verticales
A procedure that uses high-energy sound waves to look at tissues and organs inside the body
transmissive optical device which focuses or disperses a light beam by means of refraction
a mirror in which the reflective surface bulges toward the light source
a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air
the degree of highness or lowness of a tone
a unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale