Measurement of resistivity and dielectric constant of beach-sand minerals

Resistivity and dielectric constant are important parameters which influence the separation of particles in a drum-type electrostatic separator. The paper provides details of the measurement of the parameters and data on the magnitude of resistivity and dielectric constant of the minerals of beach sand.

Henny Molling nee Meyerhof, Therese Gottschalk nee Molling, Kurt, Elizabeth and Hal Gottschalk on the beach; Norderney, Germany.

Sitting in the Strandkorb (beach chair) at Norderney are Henny Molling and Therese Gottschalk; sitting in the sand are Kurt, Elizabeth and Hal Gottschalk

Adolf Molling, Therese Gottschalk nee Molling, Henny Molling nee Meyerhof, and Fritz Gottschalk on the beach; Norderney, Germany.

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Walter, Ursula and Freddy, three of Fritz Gottschalk's chidren on the beach; Norderney, Germany.

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The Gottschalk family on the beach; Norderney, Germany.

(l-r) Elizabeth, Hans Ludwing (Hal), the maid, Ursula, Walter, Freddy, Therese (in Strandkorg) and Kurt standing

Fritz Gottschalk family with other children on the beach; Norderney, Germany.

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Herbert Reiss with his wife Trude Loewy on the beach in England Portraits Couples

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Audience members (including Max Rieser?); Second International Congress of the International Union for the Philosophy of Science; Zurich Portraits Groups Men

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Outdoor group portrait of attendees of the International Meeting of the World Union for Progressive Judaism; London.

Includes Rabbi Leo Baeck, E.L. Ehrlich of Basel, Herbert Strauss of Bern, and Rabbi Eugen Messinger of Bern

Ella Hochherr with unidentified woman; Ostende Beach Portraits; Women

Handwritten information on back of photo(s).

Simon Hochherr and Liselotte Hochherr; Ostende Beach Portraits; Couples

Handwritten information on back of photo(s).

Leo Baeck with Maurice N. Eisendrath, President of the Union of American Hebrew Congregations Portraits; Groups; Men

Page 24 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Leo Baeck with Maurice N. Eisendrath, President of the Union of American Hebrew Congregations Portraits; Groups; Men

Page 24 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Leo Baeck speaking, Maurice N. Eisendrath, President of the Union of American Hebrew Congregations, in background Portraits; Groups; Men

Page 23 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Leo Baeck with New York Mayor William O'Dwyer and Union of American Hebrew Congregations President Maurice N. Eisendrath, Oscar M. Lazrus and Rabbi Daniel L. Davis Portraits; Groups; Men

Page 12 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3