The six Gottschalk children Ursula, Elizabeth, Hal, Kurt, Freddy and Walter seated in a Strandkorb (roofed wicker beach chair); Nordeney, Germany. Portraits Children

Front row Walter (left) and Freddy; middle row Kurt (left) and Hal; back row Ursula (left) and Elizabeth

Albert and Elsa Einstein on the beach with Walter Adams; Santa Barbara, California Portraits; Groups

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Multinomial solutions of the beach equation

Exact multinomial solutions of the beach equation for shallow water waves on a uniformly sloping beach are found and related to solution of the same equation found earlier by other investigators, using integral transform techniques. The use of these solutions for a general initialvalue problem for the equation under investigation is briefly discussed.

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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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).