Light
& Lenses
Light
& LensesA very good resource:
The behavior of light waves is introduced and discussed; polarization, color, diffraction and interference are introduced as supporting evidence of the wave nature of light. Color perception is discussed in detail.
The ray nature of light is used to explain how light reflects off of planar and curved surfaces to produce both real and virtual images; the nature of the images produced by plane mirrors, concave mirrors, and convex mirrors is thoroughly illustrated.
The ray nature of light is used to explain how light refracts at planar and curved surfaces; Snell's law and refraction principles are used to explain a variety of real-world phenomena; refraction principles are combined with ray diagrams to explain why lenses produce images of objects.
Victor M. Urbina proposes a new photon model (theory of light)
A very good
resource:
Visible
Light Waves
Light is the range of frequencies of electromagnetic waves that stimulates the retina of the eye.
Light can be described as a ray or a particle.
The Speed of light is 3 X108 m/s
Scientific Notation page
Luminous objects emit light. Illuminated objects reflect light. The candela is the official SI unit from which all light intensity units are calculated.
3 Primary Colors of Light
Red Green
Blue
Secondary Light Colors -- Produced
by combining two primary colors
Yellow
Cyan Magenta
Combining all three primary colors of light produces white light.
Complementary Colors -- The secondary color that, when added to a primary color, creates white light
A dye is a molecule that absorbs certain wavelengths of light and reflects others
A pigment is a colored material that absorbs certain colors ant reflects others. A pigment particle is larger than a molecule and can be see with a microscope.
A pigment that absorbs only one color from white light and reflects the other two is called a primary pigment. Yellow Cyan Magenta are the Primary Pigments.
A pigment that absorbs two colors and reflects only one is called a secondary pigment. Red Green Blue are the secondary Pigments.
Complementary Pigment -- The secondary pigment that, when added to a primary pigment, creates the color black.
Diffuse - to spread out, not concentrated or localized
http://www.hazelwood.k12.mo.us/~grichert/sciweb/light.htm Lots of links to interactive sites
http://lectureonline.cl.msu.edu/~mmp/kap24/polarizers/Polarizer.htm static polarization demo
http://micro.magnet.fsu.edu/primer/java/polarizedlight/filters/index.html dynamic polarization demo
|
You are visitor |
|
Report Bad Hyper
Links Here |
