Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to bottom, perpendicular to the horizon, with undefined slope and equation x = k.

Segway’s all-new Navimow X350 robot lawn mower is a big step up from its earlier Navimow I- and H-series, which remain available. But the manufacturer still doesn’t offer all-wheel drive. Segway’s all ...

Here are some of the latest news items from this morning, Wednesday, Jan. 22: Water line break in South Side A water main break in Pittsburgh’s South Side Slopes neighborhood has left one street an ...

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Expected deliveries of North Slope natural gas to the Interior Gas Utility will be delayed by a month following a few hiccups, IGU Executive Director Elena Sudduth said Thursday. Sudduth and IGU board ...

We discovered seafloor features such as bacterial mats and carbonate crusts typical for active methane seeps on the continental slope southwest of Svalbard. These features are associated with two main ...

Abstract: For a group of parallel survey lines with sloping sea floor at a certain Angle to the horizontal plane, the total path of the route is different when the Angle projected by the normal ...