Wondering if duct cleaning is worth your time? This video explains what duct cleaning really is, the pros and cons, and shows you how to tackle it yourself with simple tools and tips.

Abstract: A plain flat 'row-bar' of commercial thin-film disk heads was evaluated and found to be suitable for high speed and high track- and linear-density tape recording. After more than 2000 hours ...

The science pros at TKOR test if a duct tape ladder is strong enough to climb safely.