Rhythm
A Radiator
55mm, 1/2sec, f/14, ISO-800
Sliced Fruit on a light box
55mm, 1/2sec, f/10, ISO-200

I have chosen a radiator for my first subject as it clearly conveys a rhythm. As the undulating curves pass from left to right, the eye follows the beat through the photograph.
Pattern
Sliced Fruit on a light box
For my second image, I placed slices of fruit onto a lightbox. The pattern I have created appears to continue outside the boundaries of the frame.