A new three-dimensional (3D) vector parabolic equation method (PEM) is proposed to study the propagation of electromagnetic waves in tunnels, which is particularly useful for modeling wave propagation ...

Use the button to activate the distortion and choose from three modes - Clamp, Fold and Zero. You also have distortion drive ...

What's a royalty-free license? Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional ...

Browse 896,800+ music stock illustrations and vector graphics available royalty-free, or search for music notes or music background to find more great stock images and vector art. music notes music ...