Concept explainers
Light Is a Wave
C As shown in Figure P35.1, spray paint can be used with a stencil to produce an image that has sharp edges. Should you model the paint as waves or as particles? Explain.
FIGURE P35.1
Whether the spray paint used with a stencil to produce an image that has sharp edges should be modeled as waves or particles.
Answer to Problem 1PQ
The spray paint used with a stencil to produce an image that has sharp edges is modeled as particles.
Explanation of Solution
If the object size is much larger than the wavelength of the light, then it is known as particle model of light, whereas if the object size is less than the wavelength of light then it is known as wave model of light.
In the given problem, the stencil produces an image that has sharp edges because stencil has well defined lines. The size of the well defined lines of the stencil is larger as compared to the wavelength of the paint.
Therefore, the spray paint used with a stencil to produce an image that has sharp edges is modeled as particles.
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Chapter 35 Solutions
Physics For Scientists And Engineers: Foundations And Connections
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