AnnMarie Raynal John Kennedy Juliano Beraldo Christian Freksa Shadow as Physical Phenomenon Any moving matter and waves can create shadows shadows are a lack of signal due to blockage ID: 584159
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Slide1
Kinds of Shadows
Ann-Marie
Raynal
John Kennedy
Juliano
Beraldo
Christian Freksa
Slide2
Shadow as Physical Phenomenon
Any moving matter and waves can create
shadows
(shadows are a lack of signal
)
due to blockage
electromagnetic waves
sonar
rain, wind, dye shadow,
data shadow .
..
[
M
etaphorical: Intellectual or power-related shadow (Beethoven created one)]Slide3
Electromagnetic WavesSlide4
Effects
Penumbra
can be generated by:
extended or multiple energy sources
diffraction:‘bending
’ of rays at edges (as a function of wavelength)
Examples:
shadows: GPS, Radar, X-ray, sonar, infrared
no shadows: Barometers, altimeters, magnetic resonance
Signal vs. noise
– a question of definition (depending on requirements) Slide5
Perception of Shadows
Perception
of something that is missing (reduction of matter or waves)
Assignment of brightness of color:
Perception of differences rather than absolute values
Color shadows:
we see colors due to lack of lighting of
complementary color
We discussed why the B51 looked less clear than its shadow.