[QUOTE]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 and the speed it moves.
As the ribbon bends around the blade, its outermost side stretches and permanently deforms, producing curls.
Sharper blades and slower movement make tighter curls - but the pulling force has an ideal strength, above which the curls become less pronounced.
The UK-based team will present the study on Wednesday at the March Meeting of the American Physical Society in Baltimore; it also appeared last month in the journal PNAS.[/QUOTE]
groundbreaking
[url]http://www.bbc.co.uk/news/science-environment-35809116[/url]
My life is complete.
A more perfect hair simulation when?
Huh, this is a hypothesis I thought of when I was 10 and curling a ribbon and simply took as fact ever since.
Guess it's cool that we now have the data to back it up.
The only way it makes sense if you think about it. The outer side of a curve is longer than the inside, so it has to molecularly deform that way in the process.
I agree, this seemed rather obvious. Also the thicker the ribbon the tighter of a curl you should be able to make.
Cool, I guess.....
Has science finally made 6 inch ribbons possible?
Thanks science.
Science has gone too far.
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