Eye Anatomy
Which part of the eye controls how much light enters?
The pupil
Which process occurs when light hits a lens?
Refraction
What kind of lens makes objects look smaller?
A concave lens
How does LASIK surgery correct vision?
It corrects the shape of the cornea which refracts light into the eye.
What are the two types of eyes we learned about?
Camera eyes & compound eyes
Which part of the eye focuses light?
Which part of the eye focuses light?
In one word, describe the behaviour of light when it interacts with the outside of a shiny new car
Reflection
What kind of lens does a magnifying glass use?
Convex lens
How does a digital camera capture and store photos?
The image sensor receives the image and the information is converted into pixels. The camera stores pixel number/coordinate information.
Why do cats have larger, and more vertical pupils?
These are adaptations for dark conditions & depth perception.
What does the retina do?
Detects image and turns it into electrical signals to send down the optic nerve.
In one word, describe the behaviour of light when it interacts with a clear, glass window.
Transmission
What is one similarity between camera lenses and eye lenses?
What is an infared camera used for?
Capturing images in the dark.
What kind of organisms have camera eyes?
Mammals
What kind of eyes do humans, pigs, and fish have?
Camera eyes.
Why does light bend more in water than in air?
Water is more dense than air, light moves slower and bends further in higher density.
What is one difference between camera lenses and eye lenses?
Camera lenses are adjusted manually by moving forward/back, eye lenses adjust automatically by flexing and bending.
How do thermal cameras work?
Thermal cameras work by detecting infrared radiation (heat) emitted by objects and turning these infared waves into electrical signal, creating a thermal image.
How do compound eyes differ from human eyes in sight and structure?
Human eyes have one lens, compound eyes have many smaller lenses making their vision less clear and more sensitive to motion.
What is the name of the individual unit that makes up compound eyes?
Ommatidium.
What is the law of reflection?
Angle of incidence = angle of reflection.
Name an organism that has a different structural lens than humans and describe how it works.
Fish have spherical lenses for more comprehensive view as they do not have a neck. Flies have compound eyes that have many ommatidia that each have a lens.
What is in the future of vision/camera technology and how can we use these technologies to advance?
Drone imaging, infared imaging, remote sensing etc.
How do deep-sea creatures adapt their eyes to low-light environments?
Many have large eyes and enhanced rod cells to detect faint light in the deep ocean.