The most economical size of electric-lighting conductors
نویسندگان
چکیده
منابع مشابه
Chapter 5 CONDUCTORS IN ELECTRIC FIELDS
That is, the electric potential difference is the work that must be done, per unit charge, to move from to with no change in kinetic energy. Remember not to confuse electric potential energy ∆ which is in joules, and electric potential difference ∆ which is in units of = The electric field is perpendicular to equipotentials, that is lines of constant electric poten...
متن کاملThe Most Probable Size of the Universe
It has recently been suggested, by Firouzjahi, Sarangi, and Tye, that string-motivated modifications of the Hartle-Hawking wave function predict that our Universe came into existence from “nothing” with a de Sitter-like spacetime geometry and a spacetime curvature similar to that of “low-scale” models of Inflation. This means, however, that the Universe was quite large at birth. It would be pre...
متن کاملDephasing in Disordered Conductors due to Fluctuating Electric Fields
We develop a novel eikonal expansion for the Cooperon to study the effect of spaceand time-dependent electric fields on the dephasing rate of disordered conductors. For randomly fluctuating fields with arbitrary covariance we derive a general expression for the dephasing rate which is free of infrared divergencies in reduced dimensions. For time-dependent external fields with finite wavelength ...
متن کاملSize Adaptive Selection of Most Informative Features
In this paper, we propose a novel method to select the most informative subset of features, which has little redundancy and very strong discriminating power. Our proposed approach automatically determines the optimal number of features and selects the best subset accordingly by maximizing the average pairwise informativeness, thus has obvious advantage over traditional filter methods. By relaxi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science
سال: 1885
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.ns-5.101.23-a