4-6 Flashcards
(31 cards)
What does a refracting telescope use?
Lens
What does a reflecting telescope use?
Mirror
What do binoculars use?
Prisms
What is near sightedness?
You can see things up close but not far away eye looks like a football and image forms in front of the retina
What is far sightedness?
You can see things far away lens you need is double convex the image is forming behind retina like an upright egg
What is laser eye surgery
What is laser eye surgery
Surgery where they reshape your cornea so that light focuses on the retina clearly
What does the iris do
It controls the amount of light that can enter through the pupil Color is determined by genetics
What happens when white light is refracted into different colours
It turns in to a spectrum
ROYGBIV stands for…
Red, orange, yellow, green, blue, indigo and purple
When we see a black object all other colours are…
Absorbed
When we see white light every Color is being
Reflected
What are the primary colours of light
Red green blue
All modern technology uses…
Green red and blue
Red+blue+green will make
White light
Blue+red
Magenta
Red+green
Yellow
Blue+green
Cyan
Rod cells detect…
Rod cells detect…
Light
Come cells detect
Color
Our eyes have three different types of cones…
Red green and blue
If a person has problems with the rods I think hero eyes it’s called
Blindness
If a person has problem in their cone cells then they have
Color blindness
