The document explores various light phenomena, including reflections on concave and convex surfaces, mirages, and the appearance of colors under different light sources. It explains how haloes, sundogs, and rainbows are formed through the interaction of sunlight with atmospheric ice crystals. Additionally, it discusses why clouds appear white while rainclouds are dark, and why the sky is blue while sunsets appear reddish-orange.

1. LIGHT
PHENOMENA
BY:
CABUAL,PANOGAN
DIONALDO,CADIENTE &
CONDEZA

2. EXPLAIN VARIOUS LIGHT PHENOMENA SUCH AS:
A. YOUR REFLECTION ON THE CONCAVE AND CONVEX SIDES OF A SPOON
LOOKS DIFFERENT
B. MIRAGES
C. LIGHT FROM A RED LASER PASSES MORE EASILY THOUGH RED
CELLOPHANE THAN GREEN CELLOPHANE D. CLOTHING OF CERTAIN
COLORS APPEAR DIFFERENT IN ARTIFICIAL LIGHT AND IN SUNLIGHT
E. HALOES, SUNDOGS, PRIMARY RAINBOWS, SECONDARY RAINBOWS AND
SUPERNUMERARY BOWS.
F. WHY CLOUDS ARE USUALLY WHITE AND RAINCLOUDS DARK
G. WHY THE SKY IS BLUE AND SUNSETS ARE REDDISH
OBJECTIVES:

3. Light is an electromagnetic wave
that travels at a speed of 186,282
miles per second and can cause
amazing phenomena that we see
every day. In this presentation, we
will discuss some of these light
phenomena.
INTRODUCTION

4. Reflection on the Concave and Convex
sides of a Spoon looks different
If you look at your reflection on the
concave side of a spoon, it will be upside
down and smaller than the object being
reflected.
In contrast, your reflection on the
convex side of the spoon will be right-
side up and larger than the object being
reflected.
Your paragraph text
This difference is
because of the way
light rays reflect off
the curved surface of
the spoon.
concave
convex

5. Is an optical phenomenon
that produces the illusion of
water due to the refraction of
light through a nonuniform
medium. This can be
observed along a straight
highway when the sun heats
up the road due to high
temperature.
MIRAGES
Mirages are optical illusions caused by
the refraction of light in the
atmosphere where the surface
appears to be displaced or distorted.

6. Light waves have different wavelengths, and their
interaction with objects is a function of these
wavelengths. When light passes through red
cellophane, red wavelengths are absorbed, leaving
only the other colors visible. As a result, red light
passes more easily through the red cellophane as
compared to green cellophane..
LIGHT FROM A RED LASER PASSES MORE
EASILY THOUGH RED CELLOPHANE THAN
GREEN CELLOPHANE
The color of an object is determined by the
color of light it reflects. Different colors of light
have different wavelengths, and red cellophane
filters out more of the unwanted light than
green cellophane.

7. Some colors appear different
in natural light and artificial
light. This phenomenon is due
to the different wavelengths of
light and emitted light sources.
Natural light is a mix of various
wavelengths, whereas artificial
light sources like LED and
fluorescent bulbs emit
different wavelengths of light.
Clothing of certain colors
appear different in
artificial light and in
sunlight/white light
Different light sources emit different
light spectra. Sunlight contains all
colors of visible light while artificial
light sources such as LED bulbs have
a narrower spectrum. This affects
how certain colors appear under
different light sources.

9. Haloes, sundogs, primary rainbows, secondary
rainbows and supernumerary bows.
Haloes, sundogs, rainbows, and
supernumerary bows are optical
phenomena that occur when the sun's
light interacts with ice crystals in the
atmosphere. The ice crystals bend or
refract the light waves, causing these
colorful displays. Haloes are circular
rings around the sun or moon,
sundogs are bright spots on either side
of the sun, and rainbows are colorful
arcs seen in the sky. Supernumerary
bows are faint additional rainbows that
appear inside the primary bow.
These are optical phenomena
caused by the reflection,
refraction, and dispersion of
light in atmospheric
conditions.

10. A halo is a light
formed around any
celestial light source,
such as the moon and
the sun. When light
passes through the
ice crystals (solidified
water droplets), light
is refracted.
HALOES

12. Are patches of light that appears beside the sun.
They are also called “mock suns or parhel”, a Greek
word which means “beside the sun”. The term “sun
dogs” is based on the speculation that they seem
to follow the sun like dogs following their master.
Sun dogs have the same mechanism as how haloes
are formed. How ever, sun light enters the side face
of the ice crystal.
SUN DOGS

13. Are patches of light that appears beside the sun.
They are also called “mock suns or parhel”, a Greek
word which means “beside the sun”. The term “sun
dogs” is based on the speculation that they seem
to follow the sun like dogs following their master.
Sun dogs have the same mechanism as how haloes
are formed. How ever, sun light enters the side face
of the ice crystal.
RAINBOW

14. WHY CLOUDS ARE USUALLY
WHITE AND RAINCLOUDS DARK
Clouds appear white
because they reflect and
scatter all the colors in the
sunlight, making them
appear uniformly white.
However, rainclouds
appear darker due to their
increased thickness and
density, which absorb
more light.

15. Why the sky is blue and sunsets are reddish-
orange
The scattering of light by the Earth's
atmosphere is responsible for the blue
color of the sky. The blue light waves of the
sun's light scatter more than the other
colors because of their shorter
wavelengths. At sunset, the sun's light
passes through more air and its light
waves scatter more, creating a reddish-
orange hue.

16. LIGHT IS A FASCINATING SUBJECT THAT
CAUSES SOME INTRIGUING AND
BEAUTIFUL PHENOMENA.
UNDERSTANDING HOW THESE
PHENOMENA OCCUR CAN HELP US
BETTER APPRECIATE THE BEAUTY OF
THE WORLD AROUND US.
CONCLUSION

17. - Hyperphysics. (n.d.). Reflection: Concave and
Convex Mirrors.
- Livescience. (2013, August 27). What Causes
Mirages?
- Science Learning Hub. (n.d.). Colour and Light.
- The Royal Society of Chemistry. (n.d.). Why are
clouds white but rain clouds dark?
- Universe Today. (2018, January 3). Why is the
Sky Blue?
REFERENCES