Lens
Ray
optics
Geometrical
Optics
This java applet demonstrates two important theories in geometrical
optics:
The law of Reflection and
The Law of Refraction
In the first demonstration the user adjusts the angle of incidence
and the applet shows the angle of reflection in different colour. In the
second one, one can choose different kinds of medium and the refraction
pattern including the case of total internal reflection is shown.
The
Optical Prism
The angle of the prism can be adjusted giving different forms of reflection
pattern.
Thin
Lens
This java applet demonstrates the reflection due to mirrors and lens.
Students may adjust all the parameters, such as choosing a mirror or a
len, concave and convex, the object distance and the image distance, and
also the focal length or the magnification. The other parameters are then
calculated and the image of the object is formed.
The
world above the water surface viewed from fishes eyes
This java applet demonstrates how objects are viewed by fish under
water. As light propagates through different media, its speed changes,
causing the light to reflect at the boundary. Therefore, as the light ray
passes from the medium above water to the fish eyes, reflection occurs
and a specific image is formed. Students can click the object to change
the position of the object.
Light
This page provides the basic theory (including examples) of the following
topics:
1.
Luminous and illuminated bodies
2. Luminous
flux and illuminance
3. Colors
4. Reflection
of light
5. Refraction
of light
After this 5 chapters, it also provides a chapter
quiz
as a test to the students