Miss K. Grace Fahey, receptionist, under direction of Dr. Edward O. Hermann, research chemist, pours methylene blue dye over paper treated with Quilon stearato chromic chloride to demonstrate water repellency of the compound, developed by the...
Demonstration of a cellulose, or manmade, sponge at the former DuPont Exhibition at the New York Museum of Science and Industry, Rockefeller Center, New York City. The demonstration showed that the manmade sponge holds more water longer than does a...
Fatty alcohols, from which soapless soaps are made, produce unusual suds, as was shown by the demonstration at the former DuPont Exhibition at the New York Museum of Science and Industry, Rockefeller Center. On the right, Zerone anti-rust...
Periodicals; Chemical industry; Explosives; Dynamite;
Table of Contents: DuPont Gelatin Blasts Tunnels Under the Mississippi; Dynamite Extinguishes Mine Fire; The Blast Heard 'Round the World; Practical Explosives' Efficiency; DuPont Blasting Gelatin Not Low Freezing; Foresight and Hindsight; Lighting...
A general view in Foley Square as some 3,000 students from high schools and city colleges gathered for their demonstration at the City Hall in protest against proposed reductions in budget requests for education. Police reserves were called out to...
Several unemployed and communist leaders were arrested in front of the New York City Hall Oct. 16 when they attempted to stage a demonstration for the benefit of the Mayor. Police took matters to hand and there was considerable fighting. Injuries...
New York-Mark Rudd (right) chairman of the campus chapter of Students for a Democratic Society (SDS) addresses a rally Columbia University during demonstrations late May21. Portrait in the background is that of Chinese Communist Party Chairman Mao...
First official tests of transmitting of photographs by radio from Europe to the United States. Another marvel of the age became fact when photographs were transmitted from England to the United States by radio by the Radio Corporation of America...
Oddities in the news: A robin in Newark, Ohio feathers its nest with threads of pure glass and in Toledo demonstration reveals that a single pane of tempered plate glass bends but does not break under the weight of a three-ton elephant. An now,...
Saugus Iron Works, Saugus, Massachusetts restoration project. Demonstration of the forge hammer. Three hundred years ago, ironworkers cast iron sows (bars) at the blast furnace. In the forgess finery and chaffery furnaces the sows were heated...
General view of DuPont's polythene exhibit at the National Packaging Exposition in Atlantic City , New Jersey. In 30 feet of exhibit space, DuPont told the story of polythene as a packaging material, starting with molding powders and finishing with...
The flame of an acetylene torch is shot through a tube of TD nickel, a new alloy, in a demonstration of the metal's stability at high temperatures. The new metal, produced at the DuPont Metals Center in Baltimore, is designed for use in space...
A graphic demonstration of the high temperature strength of TD nickel, DuPont's new alloy of 98% nickel and 2% thorium. The TD nickel bar reaches red heat, but does not fail at 2,100 degrees Fahrenheit under a load of 6,000 pounds per square inch....
A graphic demonstration of the high temperature strength of TD nickel, DuPont's new alloy of 98% nickel and 2% thorium. The TD nickel bar reaches red heat, but does not fail at 2,100 degrees Fahrenheit under a load of 6,000 pounds per square inch....
Neoprene chloroprene rubber being given a comparative test with natural rubber at the former DuPont Exhibition of new materials developed by chemistry at the New York Museum of Science and Industry, Rockefeller Center. The demonstration machine...
Demonstration snowing the elasticity of neoprene chloroprene rubber in comparison with natural rubber, at the former DuPont Exhibition as it appeared at the New York Museum of Science and Industry, Rockefeller Center. The machine stretched the two...
Demonstration snowing the elasticity of neoprene chloroprene rubber in comparison with natural rubber, at the former DuPont Exhibition as it appeared at the New York Museum of Science and Industry, Rockefeller Center. The machine stretched the two...
Demonstration snowing the elasticity of neoprene chloroprene rubber in comparison with natural rubber, at the former DuPont Exhibition as it appeared at the New York Museum of Science and Industry, Rockefeller Center. The machine stretched the two...
Visitors at the New York Museum of Science and Industry, Rockefeller Center, were able to give a self demonstration at the former DuPont Exhibition of new materials developed by chemistry. By pressing a button, visitors could start the miniature...
