Group portrait, 50th Anniversary of the Saxony-Anhalt chapter of German Engineers; Bernburg Portraits Groups

Caption: Zur Erinnerung an das fuenfzigjaehrige Gruendungsfest Saechsisch Anhaltinischen Bezirksvereins Deutscher Ingenieure am 11. und 12. Mai 1912 in Bernburg.

Albert Einstein with unidentified group Portraits Groups

Digital Image

Unidentified Group on Beach at Swinemuende Portraits; Groups

Album 4

Unidentified Group at Swimming Pool; Pioneer Youth Camp Portraits Groups

Digital Image

Leo Baeck with group; Boston Portraits; Groups; Men

Page 58 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Topochemical photo-dimerization of 7-acetoxycoumarin - the acetoxy group as a steering agent

Among the various substituted coumarins investigated only 7-acetoxycoumarin is observed to photodimerize topochemically in the crystalline state and this observation may be of importance in the context of "crystal engineering".

Bianca and Julius Rosenbaum with unidentified group Portraits Couples

Digital Image

School group class portrait including Susan (Susi) Ehrlich; Ulm Portraits; Groups

(l-r): Ruth Altman, Irene Hirsch, Hilde Dannhauser, Suse Barth, Anneliese Hirsch, Suse Saenger, Esther Nathan, Hannelore Baer, Heinz Koerner, Ruth Bauland, Marianne Leiter, Heinz Krippel, Hanna Ullmann, Edith Weil, Otto Eckstein, Susi Ehrlich, Hans Klein, Julie Klappholz, Hanna Chose, Minna Hirsch and Rudolf Loewy

Group portrait, 10th Anniversary Dinner, Display Novelties Co. Ltd.; New York.

Digital Image

Outdoor group portrait, Haus Horst Changer?, including Ernst Peter Pick (first row center) Portraits Groups

Digital Image

Group portrait at the farewell banquet for Dr. William Antopol from the laboratory staff of Mount Sinai Hospital; Ken's Chop House, New York city Portraits Groups

Digital Image

Group US Army military portrait including Dr. William Levison (top row, third from left); Schofield Barracks, Hawaii Portraits Groups Men

Digital Image

Invariance group properties and exact solutions of equations describing time-dependent free surface flows under gravity

Using the method of infinitesimal transformations, a 6-parameter family of exact solutions describing nonlinear sheared flows with a free surface are found. These solutions are a hybrid between the earlier self-propagating simple wave solutions of Freeman, and decaying solutions of Sachdev. Simple wave solutions are also derived via the method of infinitesimal transformations. Incomplete beta functions seem to characterize these (nonlinear) sheared flows in the absence of critical levels.