Interpretation:
The evidence of light waves that are not visible to human eye needs to be mentioned.
Concept introduction:
The visible region in the
Other waves which are in the electromagnetic spectrum that cannot be detected by human eye are:
UV (ultra violet) −light, IR (infrared), X-rays, radio waves etc.
Explanation of Solution
Evidence for light rays that are not in the visible spectrum with examples:
- During hot summer day, sun burns on the skin are due to UV-light in the sun rays.
- Though radio waves are not visible, one can enjoy music from FM radio.
- Though X-rays are not in the visible region of light, still when they are passed through cracked bones or teeth with cavity, their images can be detected with their help.
- IR rays are used in the detection of
functional groups in the unknown molecules inorganic chemistry .
Chapter U5 Solutions
Living by Chemistry
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