Caption: The parallax θ between different objects depends on distance "a" to them and the perpendicular baseline "b" for the motion causing the parallax. Note
Caption: The parallax θ between different objects depends on distance "a" to them and the perpendicular baseline "b" for the motion causing the parallax. Note
θ ∝ b/afor small b/a (i.e., b/a << 1), and thus b ↑ θ ↑ and a ↑ θ ↓ . In the case of the image, the parallax between distant mountain peaks is tiny for a baseline of a few steps and the Alien probably detects none at all. He'd have to move a long way to detect parallax.
To see more of the Alien click on Alien images.
Credit/Permission: ©
David Jeffery,
2003 / Own work.
Image link: Itself.
Local file: local link: parallax_small.html.
File: Star file:
parallax_small.html.
