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The near-infrared (NIR) window (also known as optical window or therapeutic window) defines the range of wavelengths from 650 to 1350 nanometre (nm) where light has its maximum depth of penetration in tissue. [1] Within the NIR window, scattering is the most dominant light-tissue interaction, and therefore the propagating light becomes diffused ...
Many commercial instruments for UV/vis spectroscopy are capable of recording spectra in the NIR range (to perhaps ~900 nm). In the same way, the range of some mid-IR instruments may extend into the NIR. In these instruments, the detector used for the NIR wavelengths is often the same detector used for the instrument's "main" range of interest.
McFeeters index: If looking for water bodies or change in water level (e.g. flooding), then it is advisable to use the green and NIR spectral bands [18] or green and SWIR spectral bands. Modification of normalised difference water index (MNDWI) has been suggested for improved detection of open water by replacing NIR spectral band with SWIR. [19]
NDVI is functionally and linearly equivalent to the ratio NIR / (NIR+VIS), which ranges from 0 to 1 and is thus never negative nor limitless in range. [6] But the most important concept in the understanding of the NDVI algebraic formula is that, despite its name, it is a transformation of a spectral ratio (NIR/VIS), and it has no functional ...
Golfing among U.S. presidents is culturally embedded in the job—even if you come into the White House as a casual player. It's seen as a stress reliever for one of the toughest jobs in the world.
By calculating the values for R and T for successively thinner samples (s, 1 / 2 s, 1 / 4 s, … ) using the Benford's equations for half thickness, a place will be reached where, for successive values of n (0,1,2,3,...), the expression 2 n (−log( R + T )) becomes constant to within a some specified limit, typically 0.01 ...
Even when she does desk-based work, she said she's biohacking. This involves sitting on a "biohacking desk chair," which encourages good posture, and wearing a red-light therapy cap to help her ...
From January 2009 to December 2012, if you bought shares in companies when Donald M. James joined the board, and sold them when he left, you would have a 13.9 percent return on your investment, compared to a 53.1 percent return from the S&P 500.