Q We found this device while cleaning out our mother’s home of 60-plus years. I remember seeing it as a child, and being told it was a machine for exercising the eyes. The underside is marked ...

3D has long been subject to myths and conjecture. There has been relatively little hard science studying viewer reaction to 3D images, and almost none specifically on 3D TV. This past summer, Disney ...

My wood stereo viewer once belonged to my great-grandmother. It’s in great shape and came with more than 70 cards, some dated as early as 1892. The cards are also in good condition. What’s the value? ...