traveling-wave tube
transistor
solar cell
solid-state maser
When you look back at it, we have seen remarkable progress in satellite communications—and work is still continuing at a fast pace. Some of the milestones have been these:
traveling-wave tube
transistor
solar cell
solid-state maser
When you look back at it, we have seen remarkable progress in satellite communications—and work is still continuing at a fast pace. Some of the milestones have been these: