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CROSSWORD HANDBOOK
Free library / Crosswordist's Handbook / Rivers of North America

Reference book crossword. Quick word search by mask. Rivers of North America

Crosswordist's Handbook / Index

Crosswordist's Handbook

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Geography, geology, ecology / Geography / Rivers of North America

(4)

YUKON - Canada, USA

(5)

LERMA - Mexico

LIARD - Canada

OHIO - a tributary of the Mississippi

SNAKE - Columbia tributary

(6)

BRAZOS - southern USA

HUDSON - USA

JAMES - USA

OTTAWA - Canada

(7)

ALABAMA - US East

DELAWARE - US East

MACKENZIE - Canada

MISSOURI - a tributary of the Mississippi

NIAGARA - USA, Canada

POTOMAC - USA

FRASER - Canada

CHURCHILL - Canada

(8)

Arkansas - a tributary of the Mississippi

ATABASCA - Canada

ILLINOIS - a tributary of the Mississippi

KLONDIKE - Canada

COLORADO - USA, Mexico

COLOMBIA - Canada, USA

TENNESSEE - a tributary of the Ohio

(9)

WISCONSIN - USA

GRJALVA - Mexico

MISSISSIPPI - USA

(10)

YELLOWSTON - a tributary of the Missouri

SACREMENTO - USA

SASKATCHEWAN - Canada

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liquid lens 05.06.2004

The Dutch firm "Philips" has created a zoom lens based on the property of an oil drop to spread or concentrate under the influence of an electrical voltage.

Previously, Philips used the same effect, but on a miniature scale, to create a paper-thin television screen. A drop of aqueous electrolyte and a drop of oil are placed in a glass cylinder. Liquids do not mix; a flat interface appears between them. But it is worth applying tension to the ends of the cylinder, as a drop of oil bends, turning into a convex lens.

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