Editing Natural science (section)

===Modern natural science (1900–present)===
According to a famous 1923 textbook, ''Thermodynamics and the Free Energy of Chemical Substances'', by the American chemist [[Gilbert N. Lewis]] and the American physical chemist [[Merle Randall]],<ref>{{cite book|title=Thermodynamics and the Free Energy of Chemical Substances |url=https://archive.org/details/thermodynamicsfr00gnle_603 |first1=Gilbert N. |last1=Lewis |first2=Merle |last2=Randall |publisher=McGraw-Hill Book Company |edition=First |others=later Printing edition |date=1923 |asin= B000GSLHZS}}</ref> the natural sciences contain three great branches:

<blockquote>Aside from the logical and mathematical sciences, there are three great branches of ''natural science'' which stand apart by reason of the variety of far reaching deductions drawn from a small number of primary postulates — they are [[mechanics]], [[electrodynamics]], and [[thermodynamics]].<ref>{{cite book|last=Huggins|first=Robert A.|title=Energy storage|url=https://archive.org/details/energystorage00hugg|url-access=limited|date=2010|publisher=Springer|location=New York|isbn=978-1-4419-1023-3|edition=Online-Ausg. |page=[https://archive.org/details/energystorage00hugg/page/n41 13]}}</ref></blockquote>

Today, natural sciences are more commonly divided into life sciences, such as botany and zoology, and physical sciences, which include physics, chemistry, astronomy, and Earth sciences.