Many hands make light work.
To get audio from your TV to your soundbar or receiver you either need an HDMI cable or an optical cable. Both can work, but for certain types of audio you'll need an HDMI cable. Fortunately, both ...
Backward waves have recently attracted considerable interest in the context of photonic metamaterials 4, 5, where they form the basis for negative refraction 6 and underlie so-called perfect lenses 7, ...