Description

Athelstan Frederick Spilhaus and Arni Paul Rehbock sit on a bench and hold a large weather balloon.

Original caption 1: "Magnesium flash for measuring velocity of wind at night by means of camera."

Original caption 2: "From the Office of Public Relations Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 // Balloons succeeded airplanes for gathering data. This one with a magnesium flare for measuring the velocity of the wind at night when tracked by a 180 degrees camera was being launched by Athelstan F. Spilhaus (left), then a graduate student in aeronautics and now dean of the Institute of Technology at the University of Minnesota. The man at the right is unidentified."

Not used in: Technology Review, 1937.