As a lateral force is applied to the back end of the temple, the temple flexes at a thinned wall section of the notch for a first distance of travel T1, with {HEAD ~ the tip portion} moving toward {TAIL ~ the front end} of the temple until the tip abuts the wall of the notch 
moving toward
As a lateral force is applied to the back end of the temple , the temple flexes at a thinned wall section of the notch for a first distance of travel T1 , with { HEAD ~ the tip portion } moving toward { TAIL ~ the front end } of the temple until the tip abuts the wall of the notch
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