microwave
[Sep 19, 2009]
Push start to cook the chicken roast!
Although it looks like there are bending horizontal lines, in fact there are striped vertical lines of two pixels wide. Each vertical line is the same and contains the same number of horizontal stripes which all have the same height and width. That way, when all striped vertical lines are placed next to eachother, it looks that there are horizontal lines.
To create the waves, each vertical line is moved up or down.