Different ribbons will have a different optimum tension for curling Scientists have explained precisely how and why a ribbon curls when we run a scissor blade down one side of it. They teased out the ...

Scientists have explained precisely how and why a ribbon curls when we run a scissor blade down one side of it. They teased out the effects of the blade's sharpness, the tension applied to the ribbon ...

Scientists have explained precisely how and why a ribbon curls when we run a scissor blade down one side of it. They teased out the effects of the blade's sharpness, the tension applied to the ribbon ...

Most of us know how to get a ribbon to curl, by swiftly pulling a scissor blade across the surface. You’ve probably heard that the faster you do this, the tighter the curl. Physics begs to differ. A ...