Wikipedia's first sentence called it “israeli professor of chemistry at hebrew university where he also got his education”. Today it says “israeli professor of chemistry at the institute of chemistry”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the 2025 one. Red dashes: removed from Wikipedia since.Pale dots: rewritten; the numbered note shows what it says now.Red text: written in or rewritten since the previous snapshot.1 tap a number or a side note to jump between them
The opening as it read in 2025
Ottilien , Germany) is an Israeli Professor of chemistry at the Institute of Chemistry, The Hebrew University of Jerusalem . His scientific activities include sol-gel materials, molecularly doped metals, chirality and symmetry in experiments and theory. Earlier interests included fractals in chemistry and far-from-equilibrium phenomena. Current interests include also astrochemistry and geochemistry. He has authored and co-authored 420 papers (2025), many of which are highly cited, with an h-index of 87 and over 42,000 citations. Co-founder of the International Sol-Gel Society and its first chairman of the board. A "Highly Ranked Scholar - Lifetime" (in the top 0.05% of all scholars worldwide) according to the most recent (2024) ScholarGPS rankings.
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1297066067.
The opening as it stood in 2015
David Avnir (born 1947) is an Israeli professor of chemistry at Hebrew University where he also got his education. He was awarded Israel Chemical Society Prize in 2011 and was a head of the Institute of Chemistry. As of 2013 he have over 360 peer-reviewed articles in print which were cited over 22,808 times and have an h-index of 69. After ending his duties as head of the Institute of Chemistry he took a position of the head of the Authority for Graduate Students in the Experimental Sciences. From 13 October 2014 he leads the laboratory of the ITMO University , where he works in the field of sol-gel materials for biochemical engineering and semiconductor technology. Hebrew University of Jerusalem . Authority for Graduate Students in the Experimental Sciences " Solution Chemistry of the Advanced Matherials and Technologies " "International Laboratory "Solution Chemistry of Advanced Materials and Technologies" " .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 659339736.
The opening as it stood in 2020 6 passages from the previous snapshot no longer appear
Ottilien , Germany) is an Israeli Professor of chemistry at the Institute of Chemistry, The Hebrew University of Jerusalem , where he also got all his education, and where he held the positions of Head of the School of Chemistry, Head of the Institute of Chemistry, and Head of the Graduate School of the Experimental Sciences.His current scientific activities include sol-gel materials, molecularly doped metals, chirality and symmetry in experiments and theory.Earlier interests included fractals in chemistry and far-from-equilibrium phenomena.He has co-authored authored more than 400 papers (2020), many of which are highly cited.Co-founder of the International Sol-Gel Society and its first chairman of the board.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 964726601.
The opening as it stood on October 6, 2023
Ottilien , Germany) is an Israeli Professor of chemistry at the Institute of Chemistry, The Hebrew University of Jerusalem , where he also obtained all his academic training, and where he has held the positions of Head of the School of Chemistry, Head of the Institute of Chemistry, and Head of the Graduate School of the Experimental Sciences. His current scientific activities include sol-gel materials, molecularly doped metals, chirality and symmetry in experiments and theory. Earlier interests included fractals in chemistry and far-from-equilibrium phenomena. He has co-authored more than 400 papers (2020), many of which are highly cited. Co-founder of the International Sol-Gel Society and its first chairman of the board.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1150031682.
Today
Wikipedia's first sentence called it “israeli professor of chemistry at hebrew university where he also got his education”. Today it says “israeli professor of chemistry at the institute of chemistry”. Read the current article and compare.
2015
2020
Oct '23
2025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.
What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2015, and today's defining sentence is their current revision.
Then
israeli professor of chemistry at hebrew university where he also got his education
Now
israeli professor of chemistry at the institute of chemistry
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.
