Qiu Qi-feng
Abstract
On the basis of an observation on the study of the focus,this article gives generalization of following issuos: the definition of the focus;the types of the focus;the quantities of the focus,the marks of the focus,the focus of negation and the focus of question.
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On the basis of an observation on the study of the focus,this article gives generalization of following issuos: the definition of the focus;the types of the focus;the quantities of the focus,the marks of the focus,the focus of negation and the focus of question.
Key concepts: Focus (optics), Generalization, Dense plasma focus, Epistemology, Physics, Philosophy, Quantum mechanics, Optics