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- What kinds of ball games do you like most: football,
basketball, volleyball, tennis, or ping-pong balls? Have
you every tried taking a closer look to these balls?
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- There are several milestones in the development of
civilization: the discovery and applications of fire;
the invention of Edison's incandescent lamp and moving
pictures; and the popularization of television.
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- Applications of lasers in the following areas will
be covered:Optical communication, Industry, Medicine,
Fundamental and Applied, Research, Holography, Environment,
Astronomy.
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- The first laser was constructed by T. H. Maiman in 1960.
Up to this date, there are practically hundreds of different
types of lasers and the applications of lasers are increasing
everyday.
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- The idea of microwave oven was first conceived by Percy
L. Spencer in 1946 and finally patented in 1950. The mechanism
is based on the principle of frictional heat production
using microwaves.
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- Laser was first demonstrated in 1960. Since then it
has been developed into a powerful tool in many application.
It is especially useful in material processing.
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- Optical light, as well as radio waves, belongs to a
family of transverse wave called electromagnetic waves
(EM waves). EM waves are nothing but oscillations of electric
and magnetic fields. All EM waves travel at the speed
of light of approximately
 in
vacuum.
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- Nowadays lasers are no longer something that can only
be found in research laboratories, but are commonly encountered
in our everyday life: from general light sources to high-tech
consumables, like computers and VCD/DVDs.
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- Have you ridden a boat or a ferry? Guess what kind
of wake would a boat or ferry left? The following diagrams
(Fig.1 and Fig.2) show two possibilities.
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- Ultraviolet (UV) radiation is defined as all radiation
between 10 and 400nm and can be divided into four basic
categories in terms of wavelength: UVA, UVB, UVC and vacuum
UV, as shown in Fig. 1.
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- In the recent years, wireless telecommunication has
become more and more common, which can be seen from the
rapid increase in the amount of wireless accounts.
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