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1625 in science
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<h2 id="chemistry">Chemistry</h2> <ul><li>First description of hydrogen by <a href="/facts/Jan_Baptist_van_Helmont/3P0mC614">Johann Baptista van Helmont</a>. First to use the word "gas".</li> <li><a href="/facts/Johann_Rudolf_Glauber/v1RbFEom">Johann Rudolf Glauber</a> discovers <a href="/facts/Sodium_sulfate/KWzpxTmj">sodium sulfate</a> (<i>sal mirabilis</i> or "Glauber's salt", used as a <a href="/facts/Laxative/Sd8bddoF">laxative</a>) in <a href="/facts/Austria/4qWIMIyc">Austrian</a> spring water.<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a></li></ul> <h2 id="births">Births</h2> <ul><li>June 8 – <a href="/facts/Giovanni_Domenico_Cassini/JKxdrKC2">Giovanni Cassini</a>, <a href="/facts/Italian_people/dsdUeJ1n">Italian</a> <a href="/facts/Astronomer/ronF8j4a">astronomer</a> (died <a href="/facts/1712_in_science/FWMoXTLt">1712</a>)</li> <li>March 25 – <a href="/facts/John_Collins_(mathematician)/lDTFBHIm">John Collins</a>, <a href="/facts/English_people/IeI9c7BK">English</a> <a href="/facts/Mathematician/eaFSR8Fx">mathematician</a> (died <a href="/facts/1683_in_science/wD74h3mx">1683</a>)</li> <li>August 13 – <a href="/facts/Rasmus_Bartholin/2wtPG1tn">Rasmus Bartholin</a>, <a href="/facts/Danes/bUt1hyMQ">Danish</a> scientist (died <a href="/facts/1698_in_science/IyLPjgvh">1698</a>)</li> <li>December 16 – <a href="/facts/Erhard_Weigel/rSJkJKvc">Erhard Weigel</a>, <a href="/facts/German_people/F7mBCrJ4">German</a> mathematician and scientific populariser (died <a href="/facts/1699_in_science/wsbkMAq8">1699</a>)</li> <li>December 20 – <a href="/facts/David_Gregory_(physician)/BpoTf0gm">David Gregory</a>, <a href="/facts/Scottish_people/0rp2bd12">Scottish</a> <a href="/facts/Physician/qJ3woFvG">physician</a> and inventor (died <a href="/facts/1720_in_science/EvdsqBI4">1720</a>)</li> <li><a href="/facts/Samuel_Morland/12kvu9oo">Samuel Morland</a>, English inventor (died <a href="/facts/1695_in_science/Pt7MA1t5">1695</a>)</li></ul> <h2 id="deaths">Deaths</h2> <ul><li>March 7 – <a href="/facts/Johann_Bayer/EIQFIELY">Johann Bayer</a>, German <a href="/facts/Star_cartography/GPRwJbHh">uranographer</a> (born <a href="/facts/1572_in_science/QU8ph95B">1572</a>)</li> <li>April 7 – <a href="/facts/Adriaan_van_den_Spiegel/mRd3z43r">Adriaan van den Spiegel</a>, <a href="/facts/Flemish_people/MIyUKkDM">Flemish</a>-born <a href="/facts/Anatomist/p8TCWJuV">anatomist</a> and <a href="/facts/Botanist/PaIRoxnb">botanist</a> (born <a href="/facts/1578_in_science/QSzkopFJ">1578</a>)</li> <li>May 6 – <a href="/facts/George_Bruce_of_Carnock/FrdHqGk9">George Bruce of Carnock</a>, Scottish coal mining engineer (born c.1550)</li> <li><a href="/facts/Ferrante_Imperato/lDkyF1KD">Ferrante Imperato</a>, <a href="/facts/Naples/SXrFcg2C">Neapolitan</a> <a href="/facts/Natural_historian/pSlAvbTX">natural historian</a> (born <a href="/facts/1550_in_science/40d4Rmc7">1550</a>)</li> <li><a href="/facts/Willem_Schouten/fKyoQdlS">Willem Schouten</a>, <a href="/facts/Dutch_people/QhHtJ2WK">Dutch</a> navigator, died at sea (born c. <a href="/facts/1567_in_science/abUyQGUx">1567</a>)</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Westfall, Richard S. (1995). "Glauber, Johann Rudolf". The Galileo Project. Retrieved 2011-10-17. <a href="http://galileo.rice.edu/Catalog/NewFiles/glauber.html" target="_blank">http://galileo.rice.edu/Catalog/NewFiles/glauber.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> </ol>