Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
12th Edition
ISBN: 9780357391594
Author: Frederick A. Bettelheim; William H. Brown; Mary K. Campbell
Publisher: Cengage Learning US
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Chapter 18, Problem 27P
Interpretation Introduction

Interpretation: The difference between the meaning of sunblock and sunscreen should be determined.

Concept Introduction: The strongest source of ultraviolet (UV) radiation in our environment is sun. These radiations penetrate the Earth’s ozone layer and are classified into two regions on the basis of their wavelengths:

  • UVA ( 320-400 nm)
  • UVB ( 290-320 nm )

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