And here is the very different rear diffuser design with large channels to the let the air flow from under the car. (corvetteblogger.com)
They found that elements of the wood's structure helped facilitate the process efficiently, with microscopic pores and larger channels allowing water to flow quickly and continuously to the sun - heated surface. (sciencedaily.com)
The 5 GHz band can use substantially larger channels than 2.4 GHz, accounting for the difference. (pcworld.com)