T-number


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T-number

or

T number

n
(Photography) photog a function of the f-number of a camera lens that takes into account the amount of light actually transmitted by the lens
[from T(otal Light Transmission) Number]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Thus, each representative feature is analyzed in a three-stage procedure that assigns a Tropical Number (T-number) or Dvorak's classification to a disturbance by using both the qualitative description of the intensity and a quantitative description.
This structural evolution along with pressure and wind speed data allowed for tracking a T-number sequence (Table 1).