He believed light originated from our eyes.

Who is Pythagoras?


øi represents __________ and ør represents ________
What is angle of incidence and angle of reflection
This lens is thinner in the middle

What is a double concave/ concave lens?
This shape of pupil is favoured by nocturnal animals.
What is vertical slit pupils

What is the role of the pupil?
What is to let light into the eye.
White light splits into this:

What is a spectrum of colours or a rainbow or 7 colours?
This term describes when an object does not produce light but instead reflects light.
What is non-luminous?
This category lenses (not shape) concentrates light.
What is a converging lens?
Because of the highly valuable sense that vision provides, forms of the eye have been shown to have what independently at least 50 times through out history?

What is evolved?

What structure does the following function:
Helps push and pull the lens into shape.
What is the ciliary muscles
DAILY DOUBLE
Light is the only form of this, which can be visualized with the human eye.
What is energy? Also will accept what is energy, a form of kinetic energy.
True or False: The angle of incidence and refraction are always the same.
What is False?
Eyeglasses lenses without a correction (no refraction) and just for fashion are called this.
what is plano? 
A fish eye's form provides a wide wide angle of vision to help overcome this issue with its body.
What is a lack of a neck?
Where and why do we have a blind spot?
What is on the optic nerve and because there are no photoreceptors on the optic nerve.
This was estimated using the rotations of Jupiter's moon Io
What is the speed of light?
In a concave mirror, if the object is in-between the focal point and the mirror, the image will appear _________. 
What is large and right-side up
People who are farsighted have lenses that are this type (shape). 
What is a convex or converging lens?
This is the most common eye placement (where the eye is located) amongst vertebrates.
What is placement on each side of the head?

The retina is composed of two types of photoreceptors, rods and cones. Rods detect ______ and cones detect _______.
What is light and colour
Emits light as a result of being heated

What is incandescence or incandescent light?
DAILY DOUBLE
When light enters a MORE dense medium it bends ________ the normal line.
What is towards?
When an object moves further from the focal point and further from a double convex lens the object will appear:
__________ and _________.
What is smaller and upside down?
A compound eye is composed of many of these. 
What are ommatidia? (Will accept the singular form: ommatidium)

A ______ lens causes the image to project upside down on the ________.
What is convex and retina