Toshiba unveiled the world's first glassless 3D laptop, the Qosmio F750. The F750 uses a webcam to track the user's eye position and displays slightly different images to each eye to create a 3D effect without glasses. The document then provides background information on 3D technology, explaining the different methods humans use to perceive depth like stereoscopic vision, accommodation, parallax, size familiarity, and aerial perspective. It discusses how 3D is simulated on 2D screens using techniques like anaglyph, polarized light, and active shutter glasses.