Path of Light
Light always travels in this type of line.
What is a straight line?
This material transmits and reflects similar amounts of light.
What is a one-way mirror?
The opening in the center of the eye that changes size to let light in.
What is the pupil?
In order for a one-way mirror to work, there must be a big difference in this between the two rooms.
What is light level (or brightness)?
The anchoring phenomenon in Unit 6.1 features a music student practicing in a room while being observed by a teacher through a one-way mirror. The student sees this.
What is their own reflection?
For an object to be seen, light must originate from a source, bounce off the object, and enter this.
What is the eye?
A regular household mirror reflects almost all light because it has a thick this behind glass.
What is silver/metal/aluminum)?
The light-sensitive structure at the back of the eye containing sense receptors.
What is the retina?
Approximately what percentage of light is reflected by a one-way mirror film?
What is about 50%?
The physical model built in class using a box, a light source, and divider slots to test phenomena is called this.
What is the Box Model?
The term used to describe light bouncing off a surface.
What is reflect?
Clear glass transmits most light, making it this type of material.
What is transparent?
This pathway carries electrical signals from the sensory receptors in the eye to the brain.
What is the optic nerve?
Someone sitting on the brightly lit side of a one-way mirror sees this.
What is their own reflection?
In our class models, we draw these symbols to represent both the direction and path that light travels.
What are lines / arrows?
The term used to describe light passing straight through a material.
What is transmit?
This material only reflects light due to impurities and dust on it's surface.
What is glass?
When light signals from two different objects enter your eye simultaneously, your brain processes this signal as the visual image.
What is the stronger/brighter light signal?
Someone sitting on the dark side of a one-way mirror sees this.
What is the person on the bright side (seeing through like a window)?
On a diagram, varying the thickness or making dashes/dots for arrows is used to represent this property of light.
What is amount/brightness of light)?
The term for what happens when light energy is taken in by a material and converted into thermal energy.
What is absorb?
This structural difference explains why a one-way mirror behaves differently than regular glass.
What is a half-silvered/thin layer of metal (it has tiny gaps in the metal coating)?
In a dimly lit room, this part of your eye would help the pupil expand.
What is the iris?
If you turn the lights ON in room B and OFF in room A, this happens to the one-way mirror effect.
What is the effect reverses (the mirror side and window side flip)?
Daytime window glass in a home acts like a mirror to people outside because of this lighting condition.
What is sunlight outside being much brighter than the light inside?