The World Day for Audiovisual Heritage, observed on 27 October. The World Day provides an occasion to raise general awareness of the need to take urgent measures and to acknowledge the importance of audiovisual documents. ..
Audio engineering: GK, General Studies and Current Affairs
Harvard scientists have created the world’s smallest radio receiver out of diamond imperfections called nitrogen-vacancy (NV) centres. The NV centers are capable of emitting single photons or detect very weak magnetic fields. When the NV centers ..