Light Waves
Published on Nov 18, 2015
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PRESENTATION OUTLINE
LIGHT WAVES WITH THE HUMAN EYE
Let us consider an Electromagnetic field. When there is a periodic disturbance in the electric and magnetic fields, we are able to see this Electromagnetic wave. These waves have a frequency that comes in the range of electromagnetic spectrum.
Photo by erin leigh mcconnell
EYE HELPS US SEE
- The very back of the eye is lined with a layer called the retina which acts
- The retina is the membrane hag contains nerve cells that line in the back
- wall of eye. The center 10% of retina called macula.
- Responsible for sharp vision or reading vision
Photo by Cakper
CAN WE SEE LIGHT WAVES
- Visible light waves are the only electromagnetic waves we can see.
- We can see these ways as the color of a rainbow
Photo by Pink Sherbet Photography
WHAT DO LIGHT WAVES DO TO OUR EYE
WE CAN SEE LIGHT WHEN IT REFLECTED OFF PARTICLES
Photo by Garret Voight
LIGHT WAVES RESPOND TO THE EYE
LIGHT WAVES REFLECT ON THE HUMAN EYE
Photo by Nina Matthews Photography
LIGHT WAVE FACTS
- Waves with a length of between 0.4 and 0.7 micrometers can be detected by the human eye.
- As you look around the room, everything you see has these waves bouncing off of them
- Shorter visible light wavelengths are bluer in color, while longer visible light wavelengths are redder in color.
Photo by haglundc
LIGHT WAVES
- The wavelengths detectible by the human eye represent only about 3%
- Of the total electromagnetic spectrum
Photo by arbyreed
EYE FACTS
- The world’s most common eye colour is brown.
- 20 vision simply means that you have normal vision.
- eyes remain the same size from birth.
Photo by Ben Mortimer Photography
WE CAN SEE BECAUSE
- We are able to see because light from an object can move through space and reach our eyes.
Photo by harold.lloyd
