P6: VISIBLE LIGHT Flashcards
What is white light a combination of?
all colours
What is black?
the absence of colour
What colour has the longest wavelength?
red
What colour has the shortest wavelength?
violet
What colours does a white object reflect?
all colours
What colour does a red object reflect?
red
What colour does a green object reflect?
green
How does a white object appear in white light?
white
How does a red object appear in white light?
red
How does a green object appear in white light?
green
How does a white object appear in red light?
red
How does a red object appear in red light?
red
How does a green object appear in red light?
black
Why does a green object appear black in red light?
-green objects can’t reflect red light
-the red light is absorbed by the object
-so it appears black
What does it mean if an object is opaque?
light cannot be transmitted through it
What does it mean if an object is translucent?
it transmits light but distorts it and doesn’t allow an image to been seen clearly on the other side
What does it mean if an object is transparent?
it transmits light and allows an image to been seen clearly on the other side
