sound and light Garrett Mauck Flashcards
What is a pitch?
A pitch is a measure of how high or low something sound depends of the frequency.
What is a sound wave?
A longitudinal wave that is caused by vibrations and that travel through a medium.
What is infrasound?
It is a slow vibration of frequencies that is lower than 20 Hz.
What is ultrasound?
Any sound wave with frequencies higher than 20,000 Hz.
What is resonance?
When two object naturally vibrate at the same frequency that is phenomenon.
What is a intensity?
A rate that which energy flows through a area of space.
What is decibel?
It is something that measures a unit of sound or the power level of an electrical signal.
What is fundamental frequency?
The lowest frequency produce
Decibel is?
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 logarithmic scale.
What are harmonics?
harmonic is a signal or wave whose frequency is an integral multiple of the frequency of some reference signal or wave.
What are sonar?
It is a system that uses acoustic signals.
What are basilar membrane?
Contains a long, flexible membrane. Different parts of the basilar membrane vibrate a different natural frequencies.
What is a photon
a particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.
What is intensity
Intensity measures the strength of shaking produced by the earthquake at a certain location
What is radar
is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects.
What is electromagnetic spectrum
the range of wavelengths or frequencies over which electromagnetic radiation extends.
What is a light Ray
In optics a ray is an idealized model of light, obtained by choosing a line that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow.
What is virtual light
Convex lenses cause light rays to. converge, or come together.
What is real image
occurs where rays converge, whereas a virtual image occurs where rays only appear to converge. Real images can be produced by concave mirrors and converging lenses
What is diffuse deflection
Diffuse reflection is the reflection of light from a surface such that an incident ray is reflected at many angles rather than at just one angle as in the case of specular reflection.
What are geometrical optics
Is an abstraction or instrument useful in approximating the paths along which light propagates in certain classes of circumstances.
What is angel of reflection
the angle made by a reflected ray with a perpendicular to the reflecting surface.
What is angel of incidence
angle that an incident line or ray makes with a perpendicular to the surface at the point of incidence.
What is law of reflection
The angle of reflection is equal to the angle of incidence .
