When calculating the angular velocity of the Earth as it completes a full rotation on its own axis (a solar day), this equation is represented as: Ï avg = 2Ïrad/1day (86400 seconds), which works out to a moderate angular velocity of 7.2921159 Ã 10 -5 radians/second.
Roof sarking is a membrane that is fitted during tile or metal roof construction. The flexible membrane is usually installed under the battens to provide thermal insulation and to prevent water and dust penetration in the roof space.In bushfire prone areas flying embers cannot enter this space through the roof due to sarking protection.he flexible membrane is usually installed under the battens to provide thermal insulation and to prevent water and dust penetration in the roof space. In bushfire prone areas flying embers cannot enter this space through the roof due to sarking protection.
Chinking is an elastic sealant material that has a coarse surface which is designed to look like old-fashioned mortar and is used on a range of log home joints. Chinking is used for aesthetic purposes and keeping out the elements.hinking is an elastic sealant material that has a coarse surface which is designed to look like old-fashioned mortar and is used on a range of log home joints. Chinking is used for aesthetic purposes and keeping out the elements.