Wikipedia's first sentence called it “philip tobias professor of materials science at the technion – israel institute of technology”. Today it says “israeli chemist”.
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
Dan Shechtman ( Hebrew : דן שכטמן ; born January 24, 1941) is the Philip Tobias Professor of Materials Science at the Technion – Israel Institute of Technology , an Associate of the US Department of Energy 's Ames National Laboratory , and Professor of Materials Science at Iowa State University . On April 8, 1982, while on sabbatical at the U.S. National Bureau of Standards in Washington, D.C. , Shechtman discovered the icosahedral phase , which opened the new field of quasiperiodic crystals , also referred to as "quasicrystals." He was awarded the 2011 Nobel Prize in Chemistry for the discovery of quasicrystals, making him one of six Israelis who have won the Nobel Prize in Chemistry.
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1296429878.
The opening as it stood in 2010
Dan Shechtman ( Hebrew : דן שכטמן) (born in 1941 in Tel Aviv ) is the Philip Tobias Professor of Materials Science at the Technion – Israel Institute of Technology , an Associate of the US Department of Energy's Ames Laboratory , and Professor of Materials Science at Iowa State University . In 1982, he discovered the icosahedral phase , which opened the new field of quasiperiodic crystals .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 318046598.
The opening as it stood in 2015
Dan Shechtman ( Hebrew : דן שכטמן; born January 24, 1941) is the Philip Tobias Professor of Materials Science at the Technion – Israel Institute of Technology , an Associate of the US Department of Energy 's Ames Laboratory , and Professor of Materials Science at Iowa State University . On April 8, 1982, while on sabbatical at the U.S.National Bureau of Standards in Washington, D.C. , Shechtman discovered the icosahedral phase , which opened the new field of quasiperiodic crystals .Shechtman was awarded the 2011 Nobel Prize in Chemistry for the discovery of quasicrystals, making him one of six Israelis who have won the Nobel Prize in Chemistry.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 667814548.
The opening as it stood in 2020
Dan Shechtman ( ; born January 24, 1941) is the Philip Tobias Professor of Materials Science at the Technion – Israel Institute of Technology , an Associate of the US Department of Energy 's Ames Laboratory , and Professor of Materials Science at Iowa State University . On April 8, 1982, while on sabbatical at the U.S. National Bureau of Standards in Washington, D.C. , Shechtman discovered the icosahedral phase , which opened the new field of quasiperiodic crystals . Shechtman was awarded the 2011 Nobel Prize in Chemistry for the discovery of quasicrystals, making him one of six Israelis who have won the Nobel Prize in Chemistry.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 960040699.
The opening as it stood on October 6, 2023
Israeli Nobel laureate in chemistry Dan Shechtman ( ; born January 24, 1941) is the Philip Tobias Professor of Materials Science at the Technion – Israel Institute of Technology , an Associate of the US Department of Energy 's Ames National Laboratory , and Professor of Materials Science at Iowa State University . On April 8, 1982, while on sabbatical at the U.S. National Bureau of Standards in Washington, D.C. , Shechtman discovered the icosahedral phase , which opened the new field of quasiperiodic crystals . He was awarded the 2011 Nobel Prize in Chemistry for the discovery of quasicrystals, making him one of six Israelis who have won the Nobel Prize in Chemistry.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1176268332.
Today
Wikipedia's first sentence called it “philip tobias professor of materials science at the technion – israel institute of technology”. Today it says “israeli chemist”. Read the current article and compare.
2010
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 2010, and today's defining sentence is their current revision.
Then
philip tobias professor of materials science at the technion – israel institute of technology
Now
israeli chemist
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.
