The document discusses the fundamental role of light and shadow in visual perception, detailing their effects on form, depth, and mood. It covers aspects such as electromagnetic radiation, the visible spectrum, types of light sources, and how light interacts with matter, including reflections and shadows. Additionally, it highlights the use of light and shadow in art and design, emphasizing their importance in creating atmosphere and enhancing visual compositions.

1. Light and Shadow
Light and shadow are fundamental
elements of visual perception. They work in
tandem to define form, create depth, and
evoke mood.
EM
by Erwin Mapalad

2. The Nature of Light
1 Electromagnetic Radiation
Light is a form of electromagnetic
radiation that travels in waves.
2 Visible Spectrum
The visible spectrum includes the colors
we perceive, from red to violet.
3 Light Sources
Light sources can be natural, like the
sun, or artificial, like lamps.
4 Interactions with Matter
Light interacts with matter in various
ways, including reflection, absorption,
and refraction.

3. Electromagnetic Radiation

4. The Nature of Light
1 Electromagnetic Radiation
Light is a form of electromagnetic
radiation that travels in waves.
2 Visible Spectrum
The visible spectrum includes the colors
we perceive, from red to violet.
3 Light Sources
Light sources can be natural, like the
sun, or artificial, like lamps.
4 Interactions with Matter
Light interacts with matter in various
ways, including reflection, absorption,
and refraction.

5. Visible Spectrum

6. The Nature of Light
1 Electromagnetic Radiation
Light is a form of electromagnetic
radiation that travels in waves.
2 Visible Spectrum
The visible spectrum includes the colors
we perceive, from red to violet.
3 Light Sources
Light sources can be natural, like the
sun, or artificial, like lamps.
4 Interactions with Matter
Light interacts with matter in various
ways, including reflection, absorption,
and refraction.

7. Light Sources

8. The Nature of Light
1 Electromagnetic Radiation
Light is a form of electromagnetic
radiation that travels in waves.
2 Visible Spectrum
The visible spectrum includes the colors
we perceive, from red to violet.
3 Light Sources
Light sources can be natural, like the
sun, or artificial, like lamps.
4 Interactions with Matter
Light interacts with matter in various
ways, including reflection, absorption,
and refraction.

9. Interactions with Matter

10. Principles of Shadows
Shape and Form
Shadows reveal the
shape and form of
objects. They create a
sense of three-
dimensionality.
Light Direction
The direction of the light
source determines the
direction and shape of
the shadow.
Shadow Intensity
The intensity of the light
source affects the
darkness and sharpness
of the shadow.
Surface Texture and
Shadow Quality:
The texture and color of
the surface where the
shadow falls can affect
the appearance of the
shadow.
Shadow Size and
Distance:
The size of the shadow
depends on the
distance between the
object and the light
source.
Opaque Objects
Shadows form when an
opaque object blocks
light from reaching a
surface. The part of the
surface that doesn’t
receive light becomes a

11. Lighting Techniques
Direct Lighting
Strong, focused light, creating sharp shadows.
Diffused Lighting
Soft, even light, creating subtle shadows.
Backlighting
Light source behind the subject, creating a halo
effect.
Side Lighting
Light source to the side, creating
dramatic shadows and highlighting
texture.

12. Shadows in Photograp
Composition
Shadows can be
used to create
balance, depth,
and interest in
composition.
Mood
Shadows can evoke
specific moods,
from mystery and
drama to warmth
and tranquility.
Texture and Detail
Shadows can enhance the texture and
detail of objects, creating a sense of
realism.

13. Shadows in Art and Design
Art Movement Use of Light and
Shadow
Renaissance Chiaroscuro, dramatic
contrasts
Impressionism Playful, dappled shadows
Surrealism Distorted and
unexpected
shadows

14. Manipulating Light and
Shadow
1 Reflectors
Used to bounce light onto the subject, softening shadows.
2 Diffusers
Spread light over a wider area, reducing contrast.
3 Light Modifiers
Shape and direct light, creating specific effects.

15. Conclusion: The Power of
Light and Shadow
Understanding
Light and shadow are essential for
visual understanding.
Artistic Expression
They are powerful tools for artistic
expression.
Photography
They are fundamental elements of
photography.
Design
They influence design decisions
across various fields.