ANN Daily Touch-And-Go:
11.01.10 (ANN's Short-Form Daily News
Program)
ANN Daily Aero-Briefing:
11.01.10 (ANN's Long-Form Daily News
Program)
ANN Special Feature: Why Student Pilots Drop Out
- 11.01.10 (ANN Special Report, with CFI
Bob Miller)
Thunder
The sound
emitted by rapidly expanding gases along the channel of a lightning
discharge. Over three-quarters of lightning's electrical discharge
is used in heating the gases in the atmosphere in and immediately
around the visible channel. Temperatures can rise to over 10,000
°C in microseconds, resulting in a violent pressure
wave, composed of compression and rarefaction. The rumble of
thunder is created as one's ear catches other parts of the
discharge, the part of the lightning flash nearest registering
first, then the parts further away.
Aero-Linx: The Wright Brothers
& The Invention of the Aerial Age --Smithsonian
Removed temporarily from its place of honor in Smithsonian's
Milestones of Flight, the 1903 Wright Flyer, the world's first
successful airplane, serves as the centerpiece of this exhibition,
which celebrates the centennial of the Wright brothers' historic
flights. For the first time, the airplane is being displayed on the
floor, so you can get a close-up, eye-level look at the historic
craft that ushered in the age of flight.
"I'm sure they would be the first to tell you they were
just doing their jobs and nothing out of the ordinary, but the men
and women of NASA do extraordinary things each and every
day."
Source: NASA Administrator Charles Bolden
after the presentation of NASA's Exceptional Achievement Medal
to five agency employees who supported the rescue effort of 33
Chilean miners.
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