Tag: HD documentary

HOW IT WORKS – Episode 23 – Bicycle locks, Tea lights, Avocade harvest, Wrapping paper

How it Works – Episode 23 – Bicycle locks: to keep your bike where it belongs – Tea lights: these are mass produced for when it has to be nice and cozy – Avocado harvest: see where these delicious and healthy fruit come from – Wrapping Paper: When christmas is coming this will be everywhere

HOW IT WORKS: Concrete (720p)

This educational video explains how concrete hardens through the hydration of cement. The cement acts as a binder in concrete mixed with crushed rock and burnt lime. Cement starts to set when mixed with water which causes a series of hydration chemical reactions. Contrary to popular perceptions, hydraulic cements do not set by drying out, […]