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A stereotypical philosophical question is, “If a tree falls in the forest, and there is no one to hear it, does it make a sound?" The question gets to the heart of human perception. A similar question might be asked about light. For example, do the colors in the rainbow exist if no one is there to see them? The light in an unobserved rainbow, of course, exists, and the wavelengths of light that create color in the human mind exist, but do the colors themselves exist outside of the human mind? What do you think?

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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 7, Problem 52E
Textbook Problem
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A stereotypical philosophical question is, “If a tree falls in the forest, and there is no one to hear it, does it make a sound?" The question gets to the heart of human perception. A similar question might be asked about light. For example, do the colors in the rainbow exist if no one is there to see them? The light in an unobserved rainbow, of course, exists, and the wavelengths of light that create color in the human mind exist, but do the colors themselves exist outside of the human mind? What do you think?

Interpretation Introduction

Interpretation:

Existence of colors outside the human perception or mind is to be explained.

Concept Introduction:

Visible light is a very small fraction of electromagnetic spectrum that is responsible for producing colors.

Light spectrum is the visible spectrum. The wavelengths of electromagnetic radiation that are visible to human eyes range from 380 nm750 nm.

Absorption spectroscopy is a technique of measurement of absorption of radiation. The color of any substance depends on the color of the light absorbed or reflected by the molecules or atoms that compose the substance.

Explanation of Solution

There are so many things which are beyond the human perception or perceivance. The earth itself is estimated to be 4.5 billion years old, far before when living creatures on the earth were evolved. The only source of light, which is the sun, is also nearly 4.7 billion years old. This means that the light was created way before the existence of the earth. So, there are natural phenomena that were occurring and are still occurring, which is beyond human perceivance. Therefore, if a tree falls in the forest, there is a sound which is made due to matter colliding with the surface of the earth or with each other, irrespective of the fact that it was unheard

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Chemistry In Focus
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