Rules of Refraction for Diverging Lenses
Now let's investigate the refraction of light by double concave lens. Suppose that several rays of light approach the lens; and suppose that these rays of light are traveling parallel to the principal axis.
Upon reaching…Read More
Physical & Chemical Changes
Physical Changes
Another way to think about this is that a physical change does not cause a substance to become a fundamentally different substance but a chemical change causes a substance to change into something chemical…Read More
Electromagnetic Wave Theory (Maxwell)
The energy is emitted
from source continuously in the form of radiations and magnetic fields.
All electromagnetic waves travel with the velocity of light (3 * 108 m /
s) and do not require any medium for their propagatio…Read More
Different Types of Radiations and Their Sources
Electromagnetic
spectra may be emission or absorption spectrum on the basis of energy
absorbed or emitted. An emission spectrum is obtained when a substance
emits radiation after absorbing energy. An absorption spectra i…Read More
How a Lens Refracts Light?
First lets consider a double convex lens. Suppose that several rays of light approach the lens; and suppose that these rays of light are traveling parallel to the principal axis.
Upon reaching the front face of the lens, e…Read More
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