关于黑匣子的冷知识（二）
Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations, and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft's final moments. Placed in an isolated case and surrounded by a quarter-inch-thick panels of stainless steel, the boxed can withstand massive force and temperatures up to 2,000℉. When submerged, they are also able to emit signals from depths of 20,000ft.
#民航局确认东航一架飞机坠毁##黑匣子能经受烈火焚烧等环境#
（摘自2010年6月四级阅读)
再次向遇难同胞致哀。

关于黑匣子的冷知识（一）
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all US commercial flights by 1960. Early modes often failed to withstand crashed, however, so in 1965 the device was completely redesigned and moved to the rear of the plane--the area least subject to impact-- from its original position in the landing wells. The same year, the Federal Aviation Authority required that the boxed, which were never actually black, be painted orange or yellow to aid visibility.
#民航局确认东航一架飞机坠毁##失事飞机的黑匣子尚未找到#
（摘自2010年6月四级阅读）

#TED演讲视频打卡# Day03
Title:3 kinds of bias that shape your worldview
Study: revere chuckle get boxed in peer- reviewed Take an inventory of your own biases.And so the more I talked to scientists and read peer-reviewed literature and tried to conduct myself the way I'd been taught to conduct myself at Penn State when I was a student.