Evandor's Terrific Transposition

You wave your hand over an empty cup, and it mysteriously fills up with brandy. When you cast this spell you can transfer a liquid from one container into another you can see without it passing through the intervening space. You must know the exact position of both containers, as well as the exact nature of the liquid, unless you can see it, and how much of it there is in the originating container. You can also use this spell to switch two liquids in containers as long as their volumes are about equal. You cannot mix two liquids using this spell.