Document Detail

Sum of two vectors having an included angle greater than ninety degrees.
MedLine Citation:
PMID:  125777     Owner:  NLM     Status:  MEDLINE    
If the angle between two vectors is acute an increase in either vector will increase the resultant. If the angle is obtuse, however, an increase in one vector may either decrease or increase the resultant. A mathematical derivation and a simple geometric construction are presented. The theory is applied to vectors in the horizontal plane in right ventricular hypertrophy. It is shown that as the right ventricular vector is increased from a small value, the resultant vector may first decrease and then increase again with a continuous clockwise rotation.
C V Nelson; B C Hodgkin
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  8     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  1975 Jul 
Date Detail:
Created Date:  1975-11-22     Completed Date:  1975-11-22     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  285-6     Citation Subset:  IM    
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MeSH Terms
Cardiomegaly / physiopathology*

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