For the first time, scientists have shown that sound can travel through the emptiness of a vacuum. However, the rule-breaking trick requires specific circumstances and can only be carried out over ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Because space is a vacuum nearly devoid of particles, sound can’t travel through its ...

In my humble opinion, the vacuum tube rates among the most important technological inventions of the past century. It is considered by most to mark the birth of the electronic age, and until the ...