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<B>Created</B> 10.7.2006<BR>
<B>Updated</B> 18.12.2018<BR>
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<FONT COLOR="990099" SIZE="4">CORRESPONDING MEMBER<BR>
<FONT COLOR="990099" SIZE="5">ALEXANDER CHRISTOFF<BR> 
<FONT COLOR="990099" SIZE="4">(20.03.1872 – 18.10.1951)</B>
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<FONT COLOR="#990099" SIZE="4"><B>Born</B>:</FONT FACE>
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Alexander Pavlov Christoff was born in Sofia.
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<FONT COLOR="#990099" SIZE="4"><B>Education</B>:</FONT FACE>
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He studied physics, chemistry and mathematics in the University of Jena (1892-1893) and Leipzig (1893-1896). 
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He defended PhD teses at the University of Leipzig (1896).
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<FONT COLOR="#990099" SIZE="4"><B>Research</B>:</FONT FACE>
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Alexander Christoff made his experimental research on the boundary of Physics and Chamistry for the first time in Bulgaria.
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<FONT COLOR="#990099" SIZE="4"><B>Professional experience</B>:</FONT FACE>
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He was Professor on Experimental Physics at the Sofia University (1909-1937).
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Professor Alexander Christoff was dean of the Faculty of Physics and Mathematics at the Sofia University (1922-1923).
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He became coressponding member of the Bulgarian Academy of Sciences since 1921.
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<FONT COLOR="#990099" SIZE="4"><B>Teaching activities</B>:</FONT FACE>
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Alexander Christov lectured experimental physics courses (1909-1937).
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<FONT COLOR="#990099" SIZE="4"><B>Publications</B>: </FONT FACE>
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<B>A. Christoff</B>, <I>Uber die Elektrolise der Nitrate</I>, (Dissertation), Leipzig, 1896, 32 s.
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<B>A. Christoff</B>, <I>Untersuchungen uber die Absorption des CO2 in waesserigen Salzlosungen und binaeren Fluessigkeitsgemengen</I>, Zeitschrift fur physikalische Chemie, <B>53</B> 1905, s. 321
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<B>A. Christoff</B>, <I>Ueber die Abhaengigkeit der Absorption von der Oberflaechenspannung</I>, Zeitschrift fur physikalische Chemie, <B>55</B>, 1906, s. 622-634
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<B>A. Christoff</B>, <I>Nichtelektrolytische Aufloesung von Quecksilber in Wasser und anderen Fluessigkeiten</I>, Zeitschrift fur physikalische Chemie, Leipzig, <B>63</B>, 1908, s. 346-354
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<B>A. Christoff</B>, <I>Uber die Abhangigkeit der Absorption von der Oberflachenspannung</I>, Zeitschrift fur physikalische Chemie, <B>79</B>, 1912
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<FONT COLOR="#990099" SIZE="4"><B>References</B>:</FONT FACE>
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<OL>
<LI><P><B>М. Арнаудов</B>, <I>История на Софийския университет "Св. Климент Охридски" през първото му полустолетие 1888-1938</I>, София, Придворна печатница, 1939</P>
<LI><P>100 година БАН (1869-1969), София, БАН (1969) с. 754</P>
<LI><P>История на Софийския университет "Климент Охридски", София, 1988</P>
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