Superman flies "faster than a speeding bullet," and "bullet" trains zoom between cities at spectacular speed. The comparison is ubiquitous, yet the exact velocity is far less cited. So how fast do ...

at the turn of the 20th century, machine guns had become one of the most devastating weapons that a soldier could equip. Some of the machine guns that first appeared in World War II are still in used ...

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Rifle cartridges are not the most effective mechanisms for producing high projectile speed. Other things work much better. The 120mm smoothbore main gun on the M-1 Abrams tank fires a depleted-uranium ...