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Biggest wave on the electromagnetic spectrum?
Radio Waves
Smallest wave on the electromagnetic spectrum?
Gamma Rays
What's the relationship between wavelength and energy on the electromagnetic spectrum.
Lower wavelength = higher frequency = higher energy
What does infrared really mean?
Infra = Below. Below Light
What are the colors that the eye can see? From highest wavelength to smallest.
Red, orange, yellow, green blue, violet
Orange
Yellow
Green
Blue
Violet
Who is Roger Bacon?
The first man to propose the idea of the complexity of light.
Who is Isaac Newton?
He put white light through a prism and on the other side all of the colors shined through.
Why is Indigo not on the color spectrum?
The Greeks thought there was always 7 of everything, so they wanted to add Indigo because in that day the Indigo plant was used in commerce.
Why is the Sky Blue?
Violet and blue light have the shortest wavelengths and red light has the longest. Therefore, blue light is scattered more than red light and the sky appears blue during the day.
What are the 3 primary colors?
Green, Red, Blue
Why do some pictures look weird when printers don't have enough ink in all 3 primary colors?
If yellow ink has ran all the way out in a printer cartage, then the picture won't have any color that's made with yellow.
What is opaque?
no light passes through
What is transparency?
Clear, almost 100% see through
What is translucent?
some light passes through
How do one way mirrors work?
It's made of glass with a thin sheet of aluminum that reflects the light from the interrogation room, inside the room. Because the interrogation room is so bright they will only be able to see themselves.
Def. of Mirror
It reflects like at the same angle it takes it in
Plane Mirrors
Always virtual images. A plane mirror produces an image behind its plane at a distance equal to the object's distance in front of the plane.
Concave Mirrors
The light rays hit and then go towards each other. Example: Headlights and flashlights, because they want to focus all the light onto one beam.
Convex Mirrors
The light rays hit and then disperse. This makes the view larger. Example: 0.5 pictures, mirrors in stores to prevent stealing.
What are the two types of lenses?
Concave and Convex
Convex Lenses
Fat in the middle, and skinny on the outsides. The light rays hit, and bend inwards as they go through the lenses. Converging the light into one ray.
What type of image do Convex lenses make?
magnified or minified inverted real images, or magnified right-side-up virtual images
Concave Lenses
Skinny in the middle, fat on the edges. They disperse the light that enters. Examples: 0.5 camera, peep hole.
What type of image do Concave lenses make?
smaller, upright, and virtual
What does the Cornea do?
Refracts light into the eye.
What does the Iris/Pupil do?
Iris: Color of the eye; changes the size/diameter of the eye to control the amount of light let in
Pupil: Allows the amount of light through. Shrinks when there is a ton of light. Dilates when there is not much light.
What does your Lens do?
Its job is to bend the light just the right amount to land the image on the retina
What does your Retina do?
Provides a net for light sensitive cells and blood vessels to interact. The light waves hit the rods and cones, making real image on the surface.
What are Rods?
Between 90-125 million, they detect intensity of light.
What is Vitreous Fluid?
Clear, gel-like fluid inside the eyeball to keep the eyeball rounds and provide the right amount of pressure to let the retina work properly.
What do cones do?
Between 5-6 million, they detect color based on frequency.
Are the multiple types of cones?
Yes
What are the three types of cones?
Responds to longer wavelengths
Responds to mid-ranged wavelengths
Responds to short wavelengths
What is the Optic Nerve?
Carries impulses from the receptors on the retina to the brain
What is the most common type of vison deficiency? Or colorblindness?
Deuteranomaly, which is when you see only a lot of yellow and blue
What type of electomagnetic wave causes suntans and sunburns?
UltraViolet. UV
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