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 the tip portion moving toward the front end of {HEAD ~ the temple} until the tip abuts the wall of {TAIL ~ the notch} 
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 the tip portion moving toward the front end of { HEAD ~ the temple } until the tip abuts the wall of { TAIL ~ the notch }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL