Saturday, August 4, 2007

Photoelectric Effect, Law of Reflection, Photons, Corpuscles

Photons
- packets of energy that can form as light

Corpuscles
- small particles that can form as light

Photoelectric Effect
- says that light is made up of electrically charged particles

Law of Reflection
- the angle of incidence is equal to angle of reflection

Light (particle or a wave)

Particle
1. Rectillinear Propagation
2. Reflection
3. Refraction

Wave
1. Reflection
2. Refraction
3. Diffraction
4. Interference

I think light can be a particle or a wave depends on the situation.

Comparison of Camera and Eye

1. Lens(photographic for camera and lens for eye)
- used to make images of objects and refract to focus
2. Film for camera and Optic Nerve for eye
- storage of images that are formed
3. Aperture for camera and Pupil for eye
- opening for the light to enter
4. Diaphragm for camera and Iris for eye
- controls the light passing through it
5. Chemicals present in film and Photoreceptors in eye
- used as object of light to make image
6.Lid of the Lens for camera and Cornea for Eye
- protects the Lens
7. Dark Surface of the Camera and Dark Choroid in Eye
- prevents duplication of image by absorbing excess light