[lemma=□]
[lemma=momentum]
Wiseman et al. find non-local momentum kicks ; Luis et al. find classical phase kicks ( these last two appear to be different statements of the same effect ) . In particular , both suggest that the averaged variable representing the fluid trajectory is best treated as different from that representing the momentum . The forces between atoms and molecules undergoing chemical reactions can be probed by looking at the ways in which the energy of the reaction is channelled into the quantum states of the products , and , more interestingly , how the velocities of the reactants are related to the vector properties of the products , such as their velocities and angular momenta . ' if presented with a mountain of data about positions and momenta of every single particle in a baseball . Pyroclastic flows move more like a dense , low-viscosity gas pouring down a slope and even move upslope if they have enough momentum ; their downslope velocities often exceed 100 km ( 60 miles ) per hour . Soon after the Canadian case – with momentum and precedent on our side – we 'll launch a similar First Amendment legal challenge in the United States . " " The Republican governor of New Hampshire and the Democratic mayor of Boston launched programs Tuesday to allow residents to buy lower-cost drugs from Canada , adding momentum to a growing movement that would defy the Food and Drug Administration , " USA Today reports . It is most convenient to label states of electrons that can move freely about by their momenta , so the Fermi surface is a surface of constant energy in momentum space . The growth of small-scale structure in the momentum-conserving stage is sensitive to the ratio of the initial wind momenta ; the lifetime of the nebula in this stage depends also on the evolution of the wind properties . For the form of reason has its law , which , without taking into consideration the particular nature of the cognition about which it is employed , can be discovered a priori , by the simple analysis of the action of reason into its momenta .