Sci- light and sound 🤢 Flashcards
what part of a camera has the same fuction as the pupil
diaphragm
the unit of meaurement for the loudness of sound
decibel
where does sound travel faster
underwater
what are the primary colours of light
red green and blue
LOOK AT EYE AND EAR diagrams
ado it
is a disco ball and example of internal refelction
disco ball
are more packed together fequency wave lines higher or lower in frequency
higher
what colour would a red ball appear in a yellow filter
red
how are red, blue and green colours placed in the primary and secondary colour diagram
red on top
blue on left
green on right
what do red and blue make
magenta
what do green and blue make
cyan
what is the function on the iris in the eye
controls the amount of light entering the eye
what is the function of the retina in the eye
a light sensitive layer where light is focused.
what is a opaque object
objects that are not translucent, when light hits, light is reflected or absorbed
what are the parts of a eye
(in order of diagram up to down)
lens
pupil
cornea
iris
retina
optic nerve
what part of a non digital camera carries out similar functions to an iris
shutter
what part of a non digital camera carries out similar functions to an retina
film
state the law of reflection
the angle of incidence is equal to the angle of reflection (i=r)
What are 3 differences between light and sound
light waves are transverse wheras sound waves are longitudinal
sound waves require particles to move whereas light does not
sound travels much slower than light
LOOK AT convex and concave diagrams
ado it
a high frequiency sound will have a
short wavelength
a low frequency sound wave will have a
long wavelength
what does the pupil do and what feature is it in a camera
The opening in which light enters the eye
aperture
what does the cornea do and what feature is it in a camera
clear tissue that covers the front of the eye
shutter
what does the lens do and what feature is it in a camera
focuses light on the retina
lens
what does the optic nerve do and what feature is it in a camera
sends signals to the brain
what is refraction
Refraction is the bending of light. It is the bending of light when it enters a medium where its speed is different.
