Revise how to identify the y-intercept, turning point and axis of symmetry of a quadratic function. BBC Bitesize Scotland revision for SQA National 5 Maths.

The scattering of an E-polarized electromagnetic vortex Bessel beam by a gyrotropic cylinder the axis of which is perpendicular to the beam symmetry axis is studied. It is shown that for the incident ...

Chaff is a typical passive interference, which is commonly used when a ship is under the attack of anti-ship missiles (ASM). Firstly the paper gives a symmetry analysis of ship and chaff echoes, ...