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Facebook discusses with Yahoo! about the latter possibly acquiring the former, for $1 billion. [259] 2007: January 10: Product: Facebook launches m.facebook.com and officially announces mobile support. [321] 2007: May 24: Product: Facebook announces Facebook Platform for developers to build applications on top of Facebook's social graph. [322 ...
The hemispherical resonator gyroscope (HRG), also called a wine-glass gyroscope [52] or mushroom gyro, makes use of a thin solid-state hemispherical shell, anchored by a thick stem. This shell is driven to a flexural resonance by electrostatic forces generated by electrodes which are deposited directly onto separate fused-quartz structures that ...
Ludwig Obry's gyroscopic mechanism for steering a Whitehead torpedo, called the "Obry Gear" by the US Navy. Ludwig Obry was an Austrian engineer [1] and naval officer of the Austrian Navy [2] who invented a gyroscopic device for steering a torpedo in 1895.
Foucault published two papers in 1852, one focused on astronomy with the weight free to move on all three axes (On a new experimental demonstration of the motion of the Earth, based on the fixity of the plane of rotation) [8] and the other on mechanics with the weight free to move on only two axes (On the orientation phenomena of rotating bodies driven by a fixed axis on the Earth's surface.
In surveying, a gyrotheodolite (also: surveying gyro) is an instrument composed of a gyrocompass mounted to a theodolite. It is used to determine the orientation of true north . It is the main instrument for orientation in mine surveying [ 1 ] and in tunnel engineering, where astronomical star sights are not visible and GPS does not work.
At first the comments appeared ridiculous, but Trump’s consistent harassment of one of America’s closest friends is beginning to look like part of a 19th century-style imperialist strategy ...
A set of rare identical quadruplets can’t stop holding hands — and it's touching to watch. “They’re constantly reaching for each other,” Jonathan Sandhu, the babies’ dad, tells TODAY ...
If you love Scrabble, you'll love the wonderful word game fun of Just Words. Play Just Words free online!