How to Test the strength of a strand of hair

Jul 1, 2008 10:42 PM

Learn how to find out exactly how strong a strand of your hair is with this science experiment.

Just updated your iPhone? You'll find updated Apple Intelligence capabilities, new wallpapers, and enhancements to Calculator, PDF cropping, and Live Voicemail, among other useful features. Find out what's new and changed on your iPhone with the iOS 18.3 update.