International Resistance Company

International Resistance Company
Item# 3185
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Stock Certificate, issued/canceled
American Bank Note Company
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Harold Pender (1879-1959) was the first Dean of the University of Pennsylvania's Moore School of Electrical Engineering, a position he held from the founding of the School in 1923 until his retirement in 1949.

Dean Pender's academic career began in 1909 when he was appointed professor of Electrical Engineering and Head of Laboratories at MIT. In 1914, he left MIT and became director of the Department of Electrical Engineering at the University of Pennsylvania.

His distinguished career involved basis experimental research on electric and magnetic fields and applied research in electrical power which was, at the turn of the century, as now, a significant societal problem. His early personal research on the relationship of electric circuits to magnetic fields demonstrate quantitatively for the first time that a moving electrical charge produces a magnetic field. He authored five technical books in the areas of electromagnetic field and circuit theory and in electrical machinery. His various editions of Pender's Handbook of Electrical Engineers were known to practically all electrical engineers over several generations. In 1924, at the start of the radio age, Dr. Pender co-founded the International Resistance Company (IRC) and in 1932 developed and patented the composition resistor.

Dean Pender encouraged faculty research directed toward the solution of significant engineering problems. Under his direction, the Moore School constructed a differential analyzer for use in solving problems in power and ballistics. This led to the development of ENIAC, the world's first large-scale all electronic, general purpose, digital computer which was completed at the Moore School in 1946. The proof that such a machine could be built founded a new industry and marked the beginning of the Computer Revolution.DE-Delaware Modern Technologies Under $10 Male Subject Rocket Featured Unique Theme

All certificates are sold only as collectible pieces, as they are either canceled or obsolete. Certificates carry no value on any of today's financial indexes and no transfer of ownership is implied. Unless otherwise indicated, images are representative of the piece(s) you will receive.