This is a special type of Earth model which traces its idealised "horizontal" surface - the plane on which, at any point, the pull of gravity is perpendicular to it.

BBC: Europe's Goce satellite probes Earth's gravity

At the Time of the initial Movement when the stone falls from the window its potential trajectory is one perpendicular Space that is no longer the same as the stone continues to move until it hits the ground.

FORBES: Colliding Galaxies Provide A Glimpse Into Our Future

The improved structure is based on perpendicular magnetization3 and takes element miniaturization to below 30nm.

ENGADGET: Toshiba goes perpendicular to solve MRAM's power issues, rethink cache memory

While Toshiba's sittin' pretty with its 200GB perpendicular laptop drive, Samsung is finally deciding to join Hitachi, Seagate, and Western Digital (just to name a few) in the perpendicular byte stacking game.

ENGADGET: Samsung crashes the perpendicular party with bevy of laptop drives

As readers, we imagine a stable, continuous Steadicam motion upwards (and also visualize the sign carrier in the "shot" walking at a constant pace, perpendicular to the direction the "camera" is moving).

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This phenomenon is a spiral distortion of space which should if relativity is correct happen when massive bodies rotate. (In essence, such bodies drag space round with them.) Frame-dragging is predicted to cause an additional precession of one hundred-thousandth of a degree, perpendicular to that caused by the geodetic effect.

ECONOMIST: A new satellite will test Einstein's magnum opus

We already knew Hitachi was planning to unveil 20GB Microdrives and perpendicular notebook drives in 2007, but now the HDD giant is one upping itself by adding some juicy details about next year's 2.5-inch hard drive roadmap.

ENGADGET: Hitachi to offer auto-encrypting hybrid notebook HDDs in 2007