The dots then re-emit the energy in longer wavelengths, which bounce along the window pane, rather than escaping – because of a physics thing called total internal reflection.
When Mary and Laura pressed their noses against the cold window pane they could see the drip of water from the eaves and the bare branches of the trees.
Tasks included opening the window panes of a house made of Lego bricks; opening the lid of a Petri dish; and yanking out a wad of paper jammed inside a clear plastic tube.
When Mary and Laura pressed their noses against the cold window pane they could see the drip of water from the eaves and the bare F118 branches of the trees.