We show that the ratchet photocurrent excited by terahertz radiation and sensitive to the radiation polarization state can be efficiently controlled by the back gate driving the system through the Dirac point as well as by the lateral asymmetry varied by applying unequal voltages to the DGG subgratings.

In philosophy, however, it is to be deplored that eloquence too commonly passes for science, being mistaken for logical acquirement; but truth alone is the just eloquence of philosophy, and without it the finest composition is, to the logician, but babbling and vaniloquence.

But these Regies, or foreign monopolies, also prevent the growers of Tobacco of this country, from entering into competition with the foreign grower, which they would successfully do if the market were open to them[…]

There was the sternness of an old-fashioned Tour patron in his rebuke to the young Frenchman Pierre Rolland, the only one to ride away from the peloton and seize the opportunity for a lone attack before being absorbed back into the bunch, where he was received with coolness.