In tests, volunteers told to repeatedly touch screens at specific angles registered distinct clusters of touch points. (newscientist.com)
But, there's no point putting them in places — such as the top of the chassis — where fans can only get a glimpse of them at very specific angles. (wtf1.com)
I would purposely serve and hit particular shots and specific angles into that side to take advantage of that split - second of uncertainty in my opponent. (realtormag.realtor.org)