NASA scientists have created 460GHz vacuum tubes

Mark Tyson writes: Following the introduction of cheaper, smaller and more reliable transistors into the electronics in the second half of the 20th Century it was thought that computers would never look back to the days of ye olde vacuum tube. Such tubes still are popular in some consumer electronics, mainly in audio equipment due to their more natural sounding, audibly pleasing warm characteristics and response. For computers dealing in cold hard 0s and 1s no one cares about such superfluities, we just want more speed

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