When the ratio of harvestable biomass to the total biomass (harvest index, HI) of a plant is considered, the yield of a crop can then be formalized as follows: (Eqn B2 3) Eqns B2 2, B2 3 have been extensively used to analyse the different components of year-to-year yield variation...
The velocity of the planet is a vector. In our case, a vector in the plane where the planet orbits the sun. It means: two-dimensional. The vectors ##\vec{r}## and ## \vec{s}## build a coordinate system of this plane. We can therefore express the vector ##\vec...
...two important truths ...have been discovered since M. Descartes’ day. The first is ...[conservation of\( mv^2,\)not |v|.] The second discovery ...[involves directionality: momentum\({\vec{p}}=m {\vec{v}}\)is a vector.] If this rule had been known to M. Descartes,......
where is the four-velocity field of the dust distribution, which is of course not diagonal. Again the quantity is a scalar field, i.e., the energy density as measured in the rest frame of the medium. Jul 21, 2022 #8 martinbn Science Advisor 3,846 1,979 pervect said: I'm...
The velocity of the Brownian motion is defined by a transla- tional diffusion coefficient that can be used to calculate the hydrodynamic radius, i.e. the radius of the sphere that would diffuse with the same rate as the molecule of interest. This is done by measuring, with an autocorre-...
12 October 2019 Pat Frank A bit over a month ago, I posted an essay on WUWT here about my paper assessing the reliability of GCM global air temperature projections in light of error propagation and uncertainty analysis, freely available here. Four days l
𝑥xis the particle’s position,𝑣vis its velocity,𝑚mis mass, and so on. Furthermore, as every physics student is taught, there are abstract spaces without a physical meaning only to ease computation, like in the case of Lagrangian and Hamiltonian mechanics, and these are not to be ...
The first basic observation is that the Navier-Stokes equation, like many other of our basic model equations, obeys a scale invariance: specifically, given any scaling parameter , and any smooth velocity field solving the Navier-Stokes equations for some time T, one can form a new velocity ...
The only meaningful definition for a time tag (with respect to later use of the information) requires that the time tag match the actual time of occurrence of an event, or the actual time that a power system quantity was equal to its reported value, within stated uncertainty limits. In pra...
Wavelength is not a vector, it is a measure of the distance between repetitions of a specific phase of the wave function. Antonio Lao said: The frequency is a scalar and it is the inversely proportional of time. I have more to say here but will defer for the time being. Frequency ...