How does glass visibly crack?
Well, when glass shatters, you see the cracks afterwards. But how
dos the glass actually break? Are the cracks expanding in given
time or are they instantly there? A question, The team of the
Action Lab was trying to find out. The following video is the result.







Users Today : 1712
Users Yesterday : 1187
This Month : 60849
This Year : 356975
Total Users : 1789005
Views Today : 4395
Total views : 8496501