Boyden and Forest, working with Forest's graduate student Suhasa Kodandaramaiah, developed a robotic system to record activity of a single neuron in the living brain using a tiny glass tube.

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Nevada Solar One uses a parabolic trough design, in which curved mirrors, 16 feet from top to bottom, concentrate the sun's rays onto a glass tube with a steel bar at its center.

FORBES: Light And Heat

This was also a triode: a glass tube containing a heated metal filament which emits electrons, a plate that collects them once they have accelerated through the tube, and a metal grid in between.

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The earliest versions were simply glass lens fitted into a tube.

FORBES

Eximbank loans made in 1985 for several meat-processing plants, copper-processing facilities, a turnkey chemical complex, a color-television tube plant, a glass funnel facility, a process computer used in steel manufacturing, and a tractor factory remain unpaid.

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When the rubber sack makes contact with an object, whether a glass, a pen, or other hard item, a narrow inner tube sucks a small percentage of air out of the sack, making it contract and conform to the shape of the object it touches.

FORBES: Welcome, with a Nod to Robotics