Are you a low, medium or high user of gas and electricity? Estimated energy use figures How to find your actual energy usage figures How to work out the running cost of appliances The energy price cap ...
Abstract: We present a new and improved formulation of Rytov approximation (RA) using the theory of ray tracing in low loss media for solving the direct scattering problem. The resultant model ...
November 24, 2025 • Our annual reading guide returns with 380+ new titles handpicked by NPR staff and trusted critics. Find 13 years of recommendations all in one place — that's more than 4,000 great ...