Gladys and David Blank's Genealogy
Search People
Last Name:
First Name:
 
Home | What's New | Photos | Documents | Military
Documents
| Holocaust
Documents
| Histories | Headstones | Holocaust
Victims
| Places | Help English Help
 עזרה Hebrew Help
| Advanced Search

Hans Jaffe

Male 1909 - 1977  (68 years)


Personal Information    |    Media    |    Sources    |    Event Map    |    All

  • Name Hans Jaffe 
    Born 25 Feb 1909  Heidelberg, Germany Find all individuals with events at this location 
    Gender Male 
    Biography A Tribute to Dr. Hans Jaffe
    From Rochelle Salt to Poled Piezoelectrics

    CHARLES F. PULVARI

    DR. HANS Jaffe, a world renowned scientist, an international authority on crystal physics, piezoelectric crystals, and ceramics, passed away November8 ,1977, at the age of 68, ieaving behind his wife, Mary; daughter, Ann; son, John; a brother and sister. He completed his physics and chemistry studies at the University of Heidelberg, Berlin, Germany, and received his Ph.D. in Goettingen 1934 at a time when the effect of new physics was just about asserting itself. For a short period he taught at Gordonstown School, Scotland.

    However, because of the uncertain European state of affairs at that time (1935), he came to the United States, where due to a fortunate coincidence, Prof. Walter G. Cady, the inventor of “Frequency Control by Quartz Crystals” learned about him and engaged him as an assistant [l]. Prof. Cady soon found him a very able co-worker and made him an Assistant Professor at Wesleyan University in Connecticut. In this position he helped to collect and organize data for Prof.C ady’s treatise on piezoelectricity. This work proved to be a very fruitful one, because it lead h ml ater into a number osfi milar contributions in the field of modern piezoelectric technology.

    He authored the Piezoelectric Section in the EncycIopedia Britanica, as well as the Piezoelectric Section in the Physical Acoustic series of Academic Press. He was also a co-author of the book, Piezoelectric Ceramics. Recently, he compiled the Electrooptic Section for the universally used Landolt- Bornstein Tables of Physical Constants. In the academic year 1939-1 940, he as Acting Head of the Physics Department of Allegheny College. In June 1940, he joined the Brush Development Company and a new era began in his life. He started research on new, more stable and efficient piezoelectric crystals than Rochelle salt. As a result of this effort, at that time, superior ADP crystal was made practically available for hydrophones and anti-submarine electronics. Although this family of crystals
    served the US. Navy well, after the end ofW orld War I1 in 1946 the appearance of highly efficient and rugged piezoelectric ceramics redirected his group’s effort in the utilization of poled piezoelectric ceramics for transducers, filters, and spark generators [Z].

    The innovations in the field of electroacoustics and particularly the understanding of doped The author is with the Department of Electrical Engineering, Catholic University of America, Washington, DC. PZT (lead zirconate titanate) by his group secured for his company a leading technological and patent position. Dr. Jaffe has held about 27 U.S. patents and a number of patents in foreign countries. Between 1946 and 1957, Dr. Jaffe’s group successfully grew quartz crystals. In 1952, Dr. Jaffe became head of the Crystal Research Department of Brush Development Company. After the latter merged with the Clevite Corporation, he became head of the Electronic Research Division of the new corporation. In this capacity he took additional responsibilities, primarily concerned with the interconversiono f electric, optic, and acoustic energy.

    About 70 percent of the Division’s program was under government contract, sucha s Naval research, US. Army Electronics Command, AEC, NASA, and the Aeronautical Research Laboratory Inc., Dr. Jaffe became Vice-president and Director of the Electronic and Electrooptic Technology of Gould Laboratories, and he served in this capacity until his retirement in February 1974. As he retired, several members of his group formed Cleveland Crystals Corporation with Dr. Jaffe as a consultant and member of the Board of Directors. He spanned an extraordinary time and career, beginning in this country as a student, co-worker and a friend of Prof. Cady [3].

    He worked hard all his life to help develop the electroacoustic field from its infancy (Rochelle salt) into an important practical technology-a most significant legacy. His interests included all physical phenomena associated with dielectrics as well as the field of semiconductors. Correspondingly, he served as a Chairman of the Committee on Piezoelectric Crystals and the Technical Committee on Transducers and Resonators, and until 1975 was a member of the Ferroelectric Crystal Subcommittee. He was a Fellow of the American Physical Society and the Institute of Electrical and Electronics Engineers. His last publication is a most eloquent obituary for W. G. Cady and an interesting overview of the initial history of ferroelectricity. In 1969, after the merger of Clevite Corporation into Gould,

    REFERENCES
    [ 11 S. B. Lang, “A Conversation with Professor W. G. Cady,” Ferro-
    (2 1 W. G. Cady, Piezoelectricity, Revised Edition. Dover, 1964.
    (31 H. Jaffe, “Reminiscences of W. G. Cady and the Early History
    of Ferroelectricity,” Ferroelectrics, 1975, vol. 9, pp. 153.
    electrics, 1975, vol. 9, pp. 148.
    0018-9537/78/1100-0329900.75 0 1978 IEEE  [1
    Immigration 24 Oct 1935  New York, NY, USA Find all individuals with events at this location  [2
    Occupation Physics professor 
    Residence Heidelberg, Germany Find all individuals with events at this location 
    Residence New York, NY, USA Find all individuals with events at this location 
    • 333, East 57th Street
    Residence Cleveland, OH, USA Find all individuals with events at this location 
    Social Security Number 288-18-4792 
    Died 8 Nov 1977  Cleveland, OH, USA Find all individuals with events at this location 
    Person ID I458  Blank Family
    Last Modified 20 Feb 2010 

    Father Prof Edgar Jaffe,   b. 14 May 1866, Hamburg, Germany Find all individuals with events at this location,   d. 29 Apr 1921, Munich, Germany Find all individuals with events at this location  (Age 54 years) 
    Mother Elisabeth Helene Amalie Sophie Freiin von Richthofen,   b. 8 Oct 1874, Chateau-Salins, France Find all individuals with events at this location,   d. 22 Dec 1973, Heidelberg, Germany Find all individuals with events at this location  (Age 99 years) 
    Married 18 Nov 1902  Heidelberg, Germany Find all individuals with events at this location 
    Family ID F167  Group Sheet  |  Family Chart

    Family Mary Schuster,   b. 6 Jan 1917, New York, NY, USA Find all individuals with events at this location,   d. 26 Jun 2009, Ithaca, NY, USA Find all individuals with events at this location  (Age 92 years) 
    Married 6 Sep 1947 
    Children 
     1. Ann Eliza Jaffe
     2. John Jaffe
    Family ID F1977  Group Sheet  |  Family Chart

  • Event Map
    Link to Google MapsBorn - 25 Feb 1909 - Heidelberg, Germany Link to Google Earth
    Link to Google MapsImmigration - 24 Oct 1935 - New York, NY, USA Link to Google Earth
    Link to Google MapsResidence - - Heidelberg, Germany Link to Google Earth
    Link to Google MapsResidence - - New York, NY, USA Link to Google Earth
    Link to Google MapsResidence - - Cleveland, OH, USA Link to Google Earth
    Link to Google MapsDied - 8 Nov 1977 - Cleveland, OH, USA Link to Google Earth
     = Link to Google Earth 
    Pin Legend  : Address       : Location       : City/Town       : County/Shire       : State/Province       : Country       : Not Set

  • Documents
    Hans Jaffe Naturalization
    Hans Jaffe Naturalization

  • Sources 
    1. [S408] IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, VOL. SU-25, NO. 6,, http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1539114.

    2. [S171] New York Passenger Lists, 1820-1957 , Ancestry, SS Bremen from Bremen, Germany.


Help
עזרה
© This Site Copyright David Blank 2008-2018
This site powered by The Next Generation of Genealogy Sitebuilding ©, v. 12.0.2, written by Darrin Lythgoe 2001-2018.

Send me eMail