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a lens such that a parallel beam of light passing through it is caused to diverge or spread out
Diffraction of light waves is caused by the density of the medium through which the light is passing. Diffraction results when light travels from rarer to denser medium.
two. refraction is caused because of a wave passing between one medium to another, therefore changing its speed. Waves travel through different mediums at different speeds, depending on the medium's refractive index. By passing from one medium to another, it will change speed and therefore refract.
Prop wash is caused by a passing propeller driven aircraft. The spinning prop creates a vortex like wind that can be quite violent.
Sound wave.
An eclipse
what are some examples of seismic disturbances
it is a sizure caused by an electric current passing through the brain
Gastrointestinal disturbances may be avoided by taking the ipriflavone supplement with food.
epilepsy
A Electro Magnet, caused in theory by the alignment of the particles in the material duo to the current passing through it.
a lens such that a parallel beam of light passing through it is caused to diverge or spread out
Emotional disturbances are the cause for various mental problems. Misunderstandings and lack of communication is the primary cause of emotional disturbances.
The singular is "tsunami" and the plural "tsunamis", for a large sea wave caused by tectonic disturbances.
A mirage is caused by cold air passing through warm dense air. The light is then bent and reflects into a mirage.
Electric shock injuries are caused by lightning or electric current from a mechanical source passing through the body
We call this a "meteor shower", and it is caused by the Earth passing through the orbital path of an old decayed comet.