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The Messerschmitt Bf 109 is a German World War II fighter aircraft that was, along with the Focke-Wulf Fw 190, the backbone of the Luftwaffe's fighter force. [3] The Bf 109 first saw operational service in 1937 during the Spanish Civil War.
Nuclear War Survival Skills or NWSS, by Cresson Kearny, is a civil defense manual. It contains information gleaned from research performed at Oak Ridge National Laboratory during the Cold War , as well as from Kearny's extensive jungle living and international travels.
The cat skull is unusual among mammals in having very large eye sockets and a powerful specialized jaw. [ 53 ] : 35 Within the jaw, cats have teeth adapted for killing prey and tearing meat. When it overpowers its prey, a cat delivers a lethal neck bite with its two long canine teeth , inserting them between two of the prey's vertebrae and ...
In particle physics, colliders, though harder to construct, are a powerful research tool because they reach a much higher center of mass energy than fixed target setups. [1] Analysis of the byproducts of these collisions gives scientists good evidence of the structure of the subatomic world and the laws of nature governing it.
From top left, clockwise: COVID-19 became a global pandemic in 2020 and dominated the early part of the decade, as the disease and virus that causes the disease were deemed an international public health emergency until 2023; A Ukrainian T-72 tank driving in the Donetsk region during the Russian invasion of Ukraine; A U.S. Air Force plane carries passengers out of Afghanistan during the 2021 ...
The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e.g. agoraphobia), in chemistry to describe chemical aversions (e.g. hydrophobic), in biology to describe organisms that dislike certain conditions (e.g ...
Without the guide they had been promised, the group had to decide whether to turn back and rejoin the traditional trail, follow the tracks left by the Harlan–Young Party through the difficult terrain of Weber Canyon or forge their own trail in the direction that Hastings had recommended.