Radio amateurs are inventive people, and though not all of them choose to follow it there is a healthy culture of buildng radio equipment among them. In particular the field of antennas is where ...

A significant advantage of the OPA approach is that it is not limited to the narrow wavelength range defined by the laser transitions of the laser gain media (for example, rhodamine 6G or quantum ...

The best free Adobe Illustrator alternatives serve up all the essential tools artists need for vector editing without requiring a Creative Cloud subscription. There's ...