Why do the edges of shadows appear fuzzy?

Understanding Shadows and Diffraction

Interactive Video
•
Physics, Science
•
9th - 12th Grade
•
Hard

Sophia Harris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Due to the reflection of light
Because shadows are inherently fuzzy
Due to the nature of light sources like the sun
Because of diffraction
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was Augustine Fresnel's contribution to the understanding of light?
He proposed that light is a stream of particles
He discovered the photoelectric effect
He suggested that light is a wave phenomenon
He invented the laser
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was Simeon Poisson's stance on the wave theory of light?
He was a harsh critic
He was indifferent
He was a strong supporter
He had no opinion
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the purpose of the experiment described in the video?
To demonstrate the photoelectric effect
To measure the speed of light
To observe Poisson's spot
To prove that light is a particle
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the main challenge in observing Poisson's spot?
Finding a suitable light source
Creating a perfect circular object
Measuring the intensity of the light
Ensuring the light was in phase
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did the successful observation of Poisson's spot demonstrate?
That shadows are always dark
That light is a particle
That light travels in straight lines
That light is a wave
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is Poisson's spot not commonly observed in everyday life?
It requires a special type of light
Shadows are too small to notice
Light sources are usually coherent
Most objects are not perfect circles
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