Mnemonic devices are ways to remember long lists... such as ROYGBIV (Red Orange Yellow Green Blue Indigo Violet)
and the latest written by B4 Energy and Dynamics (RMIVUXG) Radio Micro Infrared Visible Light Ultraviolet X-ray and Gamma (recently my ipod vanished under xavier's G-string).
Don't forget wavelength and frequency are inversely proportionate.
Wednesday, March 18, 2009
Eye getting knocked out
it's true..
an eye can get popped out. Here is the famous basketball game:
http://www.youtube.com/watch?v=6DXWwa1iT-s
an eye can get popped out. Here is the famous basketball game:
http://www.youtube.com/watch?v=6DXWwa1iT-s
Sunday, March 1, 2009
Optical Illusion Assignment
Though some of you are done, I want to remind all of you your assignment parameters are:
Find an optical illusion. Print and cut it out. Classify the type. Tell us how it works. Write that information on an index card. Put both on a piece of construction paper and put on the wall in the classroom.
Classify the type of optical illusion (Physiological (Hermann Grid and Mach Band examples), Conceptual (Kanizsa's Triangle), or Cognitive illusions. Conceptual and cognitive images are often confused. What is most important to know for our class is the difference between a conceptual (brain interpretation) "mistake" and a physical (afterimage, parallel line skewed by color) eye or nerve "mistake".
What does this have to do with physics and earth science? Light, my friends, is how you are reading this. Human's ability to understand it and grasp it are dynamic and everchanging. Al Sheckel, winner of the Nobel Prize in Physics, did most of his research on perception. He is an amazing, truant, dynamic, brilliant, and odd man. His work on perception, light, and the human brain is ground breaking. He's also one of the folks on the edge of edgy in terms of "the brain trust" an inventors group and other very cool things. He also came up with the darwin bumper sticker with a friend. If that isn't cool I don't know what is.
Find an optical illusion. Print and cut it out. Classify the type. Tell us how it works. Write that information on an index card. Put both on a piece of construction paper and put on the wall in the classroom.
Classify the type of optical illusion (Physiological (Hermann Grid and Mach Band examples), Conceptual (Kanizsa's Triangle), or Cognitive illusions. Conceptual and cognitive images are often confused. What is most important to know for our class is the difference between a conceptual (brain interpretation) "mistake" and a physical (afterimage, parallel line skewed by color) eye or nerve "mistake".
What does this have to do with physics and earth science? Light, my friends, is how you are reading this. Human's ability to understand it and grasp it are dynamic and everchanging. Al Sheckel, winner of the Nobel Prize in Physics, did most of his research on perception. He is an amazing, truant, dynamic, brilliant, and odd man. His work on perception, light, and the human brain is ground breaking. He's also one of the folks on the edge of edgy in terms of "the brain trust" an inventors group and other very cool things. He also came up with the darwin bumper sticker with a friend. If that isn't cool I don't know what is.
The Eye
We are currently studying the eye. Here is a diagram of the eye. The parts of the eye are underneath.
Cornea - the clear, dome-shaped tissue covering the front of the eye.
Eyebrow - a patch of dense hair located above the eye.
Eyelash - one of the many hairs on the edge of the eyelids.
Eyelid - the flap of skin that can cover and protect the eye.
Iris - the colored part of the eye - it controls the amount of light that enters the eye by changing the size of the pupil.
Lens - a crystalline structure located just behind the iris - it focuses light onto the retina.
Optic nerve - the nerve that transmits electrical impulses from the retina to the brain.
Pupil - the opening in the center of the iris- it changes size as the amount of light changes (the more light, the smaller the hole).
Retina - sensory tissue that lines the back of the eye. It contains millions of photoreceptors (rods and cones) that convert light rays into electrical impulses that are relayed to the brain via the optic nerve.
Tear - clear, salty liquid that is produced by glands in the eyes.
Vitreous - a thick, transparent liquid that fills the center of the eye - it is mostly water and gives the eye its form and shape (also called the vitreous humor).
Cornea - the clear, dome-shaped tissue covering the front of the eye.
Eyebrow - a patch of dense hair located above the eye.
Eyelash - one of the many hairs on the edge of the eyelids.
Eyelid - the flap of skin that can cover and protect the eye.
Iris - the colored part of the eye - it controls the amount of light that enters the eye by changing the size of the pupil.
Lens - a crystalline structure located just behind the iris - it focuses light onto the retina.
Optic nerve - the nerve that transmits electrical impulses from the retina to the brain.
Pupil - the opening in the center of the iris- it changes size as the amount of light changes (the more light, the smaller the hole).
Retina - sensory tissue that lines the back of the eye. It contains millions of photoreceptors (rods and cones) that convert light rays into electrical impulses that are relayed to the brain via the optic nerve.
Tear - clear, salty liquid that is produced by glands in the eyes.
Vitreous - a thick, transparent liquid that fills the center of the eye - it is mostly water and gives the eye its form and shape (also called the vitreous humor).
Subscribe to:
Posts (Atom)
