The <a href="https://en.wikipedia.org/wiki/Montgolfier_brothers" id="mwRA" rel="mw:WikiLink" title="Montgolfier brothers">Montgolfier brothers</a> first test fly an unmanned <a href="https://en.wikipedia.org/wiki/Hot_air_balloon" id="mwRQ" rel="mw:WikiLink" title="Hot air balloon">hot air balloon</a> in France; it floats nearly <span about="#mwt42" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"2.5"},"2":{"wt":"km"},"3":{"wt":"mi"},"abbr":{"wt":"on"}},"i":0}}]}' id="mwRg" typeof="mw:Transclusion">2.5</span><span about="#mwt42" typeof="mw:Entity"> </span><span about="#mwt42">km (1.6</span><span about="#mwt42" typeof="mw:Entity"> </span><span about="#mwt42">mi)</span>.<sup about="#mwt46" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-7"}}' id="cite_ref-7" rel="dc:references" typeof="mw:Extension/ref"><a href="./December_14#cite_note-7" id="mwRw" style="counter-reset: mw-Ref 7;"><span class="mw-reflink-text" id="mwSA">[7]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-7"><cite about="#mwt43" class="citation book cs1" id="CITEREFGillispie2014">Gillispie, Charles Coulston (2014). <a class="external text" href="https://books.google.com/books?id=gNX_AwAAQBAJ" id="mwB3M" rel="mw:ExtLink nofollow"><i id="mwB3Q">The Montgolfier Brothers and the Invention of Aviation, 1783-1784: With a Word on the Importance of Ballooning for the Science of Heat and the Art of Building Railroads</i></a>. Princeton, N.J.: Princeton University Press. p.<span id="mwB3U" typeof="mw:Entity"> </span>21. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwB3Y" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwB3c" typeof="mw:Entity"> </span><a href="./Special:BookSources/9780691613321" id="mwB3g" rel="mw:WikiLink" title="Special:BookSources/9780691613321"><bdi id="mwB3k">9780691613321</bdi></a>.</cite><span about="#mwt43" class="Z3988" id="mwB3o" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Montgolfier+Brothers+and+the+Invention+of+Aviation%2C+1783-1784%3A+With+a+Word+on+the+Importance+of+Ballooning+for+the+Science+of+Heat+and+the+Art+of+Building+Railroads&amp;rft.place=Princeton%2C+N.J.&amp;rft.pages=21&amp;rft.pub=Princeton+University+Press&amp;rft.date=2014&amp;rft.isbn=9780691613321&amp;rft.aulast=Gillispie&amp;rft.aufirst=Charles+Coulston&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DgNX_AwAAQBAJ&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ADecember+14"></span></span>