Abstract: A method includes sequentially outputting from an imaging sensor each pixel row of a set of pixel rows of an image captured by the imaging sensor. The method further includes displaying, at a display device, a pixel row representative of a first pixel row of the captured image prior to a second pixel row of the captured image being output by the imaging sensor. An apparatus includes an imaging sensor having a first lens that imparts a first type of spatial distortion, a display device coupled to the imaging sensor, the display to display imagery captured by the imaging sensor with the first spatial distortion, and an eyepiece lens aligned with the display, the eyepiece lens imparting a second type of spatial distortion that compensates for the first type of spatial distortion.

Abstract: A method includes sequentially outputting from an imaging sensor each pixel row of a set of pixel rows of an image captured by the imaging sensor. The method further includes displaying, at a display device, a pixel row representative of a first pixel row of the captured image prior to a second pixel row of the captured image being output by the imaging sensor. An apparatus includes an imaging sensor having a first lens that imparts a first type of spatial distortion, a display device coupled to the imaging sensor, the display to display imagery captured by the imaging sensor with the first spatial distortion, and an eyepiece lens aligned with the display, the eyepiece lens imparting a second type of spatial distortion that compensates for the first type of spatial distortion.

Abstract: An example feeding device includes a container and a controller that determines an orientation of the container. The controller activates a first stimulus when the container is in a first orientation and a second stimulus when the container is in another orientation. The first stimulus may please a child, and the second stimulus may displease a child.

Abstract: An example feeding device includes a container and a controller that determines an orientation of the container. The controller activates a first stimulus when the container is in a first orientation and a second stimulus when the container is in another orientation. The first stimulus may please a child, and the second stimulus may displease a child.

Abstract: A vertical-axis wind turbine includes two or more elongated blades connected to a rotor tower. The tower defines an axis of rotation and is linked, preferably via a gearbox or other torque-converting arrangement, to the shaft of a generator. Each blade is "twisted" so that its lower attachment point is displaced angularly relative to its upper attachment point. In a preferred embodiment, the radial distance of each blade from the axis of rotation varies between upper and lower attachment points such that the blade lies approximately along a "troposkein", which is the shape assumed by a string clamped at each end and spun about an axis passing through the ends of the string. The ratio between blade chord length and blade thickness is preferably constant over the length of each blade, with the middle of each blade approximately 80% as thick as its ends. The cross-section of the blades may be teardrop-shaped, shaped as an airfoil, rectangular, or curved in some other way.