resistance+from+roughness
111Rolling tackle — Rolling Roll ing, a. 1. Rotating on an axis, or moving along a surface by rotation; turning over and over as if on an axis or a pivot; as, a rolling wheel or ball. [1913 Webster] 2. Moving on wheels or rollers, or as if on wheels or rollers; as,… …
112Darcy, Henri-Philibert-Gaspard — ▪ French engineer born June 10, 1803, Dijon, France died Jan. 3, 1858, Paris French hydraulic engineer who first derived the equation (now known as Darcy s law) that governs the laminar (nonturbulent) flow of fluids in homogeneous, porous… …
113Exchange Bias — Als Exchange Bias (EB) bezeichnet man eine unidirektionale Anisotropie (deshalb auch unidirectional exchange anisotropy genannt), die durch die Kopplung zwischen einem Ferro und einem Antiferromagneten entsteht. Der Exchange Bias bewirkt eine… …
