Symposium

1. LIGHT IN LIFELIGHT IN LIFE
-A POWERPOINTA POWERPOINT
PRESENTATIONPRESENTATION

2. WHAT IS LIGHT?
 Light is electromagnetic radiation within
the electromagnetic spectrum. In
physics, the term light sometimes refers
to electromagnetic radiation of any
wavelength, whether visible or not. In
this sense, gamma rays, X-rays,
microwaves and radio waves are also
light.
 Like all types of light, visible light is
emitted and absorbed in tiny "packets"
called photons, and exhibits properties of
both waves and particles. This property
is referred to as the wave – particle
duality. The study of light, known as
optics, is an important research area in

3. THE ELECTROMAGNETIC
SPECTRUM
EM SPECTRUM is the entire range of wavelengths or frequencies of
electromagnetic radiation extending from gamma rays to the longest radio waves
and including visible light.

4. WHY IS LIGHT SO
IMPORTANT?
 On the most fundamental level through photosynthesis,
light is necessary to the existence of life itself, and the
many applications of light have revolutionized society
through medicine, communications, entertainment and
culture. Light and photonics are poised to become key
enabling technologies of the future.

5. LIGHT IN MEDICINES AND
LASERS
 Breakthroughs in light
technology continue to
revolutionize the medical
industry. Medical imaging,
surgical procedures, and even
diagnosis rely upon the use of
light.
 Lasers (Lig ht Am plificatio n by
Stim ulate d Em issio n o f
Radiatio n) are especially
crucial in dermatology (skin),
ophthalmology (eyes), and
dentistry due to their precision
and high power density.

6. LIGHT AND ASTRONOMY
 All the information we
have about the universe
comes from light
 A vast amount of the
fundamental properties
of an astronomical object
can be found just by
dissecting their light into
individual colors.

7. ART, CULTURE AND LIGHT
 Paintings and murals in all cultures of the
world show how artists have used light and
shade and color to illustrate mood and create
atmosphere. Modern technological
possibilities allow artists to use light in new
ways in entertainment and performance.

8. CONNECTING THE WORLD
 Social media, low cost
telephone calls, video
conferencing with family
and friends – these are
three examples of how
the internet allows
people around the world
to feel connected in a
way that has never
before been possible in
history. And all of this
technology is because

10. Apre se ntatio n by the
stude nts o f X-I.
(Diksha, Hrithik, and
Kunal)