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doc#122 | <formul> of <formul>, quantum yields of the | order | of <formul> have been observed at 85°. |
doc#122 | liquid carbon tetrachloride at 65° is of the | order | of magnitude of unity. </p><p> When typical |
doc#123 | variation of the rate was as much as an | order | of magnitude. One may conclude that most |
doc#123 | . These extrapolated fluxes are about an | order | of magnitude less than the values from |
doc#129 | <formul>, and let g be a <formul> curve of | order | k on Q. A general line l meets Q in two |
doc#129 | singular lines is the <bital>k<eital>th | order | complex of lines which meet g. </p><p> The |
doc#129 | Q in two points which are invariant. The | order | of this congruence is <formul>, since <formul> |
doc#129 | Since the complex of singular lines is of | order | k and since there is no complex of invariant |
doc#129 | follows from the formula <formul> that the | order | of the involution is <formul>. </p><p> There |
doc#129 | congruence of its secants is therefore of | order | <formul> and class <formul>. </p><p> A final |
doc#129 | of a general plane field of lines, is of | order | <formul> and class <formul>. Finally, the |
doc#129 | general bundle of lines is a congruence whose | order | is the order of the congruence of invariant |
doc#129 | lines is a congruence whose order is the | order | of the congruence of invariant lines, namely |
doc#129 | , namely <formul> and whose class is the | order | of the image congruence of a general plane |
doc#129 | image of this pencil is a ruled surface of | order | <formul> which is met by the plane of the |
doc#129 | the plane of the pencil in a curve, C, of | order | <formul>. On C there is a <formul> correspondence |
doc#129 | composite, with the secant of g and a curve of | order | <formul> as components. Thus it follows |
doc#129 | vertex is transformed into a ruled surface of | order | <formul> having <formul> generators concurrent |
doc#129 | concurrent at P. Since a ruled surface of | order | n with n concurrent generators is necessarily |
doc#129 | involution there is a cone of invariant lines of | order | <formul>, namely the cone of secants of |