Nadir camera rigging that utilizes more than 2 lenses to capture 360º footage, the nadir location follows the same logic as the astronomical definition in that it is located opposite of the zenith, or in the same direction as the gravitational pull in relation to the camera rigging. Nadir The nadir (, ; from / ALA-LC: "naẓīr", meaning "counterpart") is the direction pointing directly "below" a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface there. Since the concept of "being below" is itself somewhat vague, scientists define the
Point-to-Point Protocol over Ethernet (Ethernet MAC, variable) + 10 (RFC 2684 LLC, variable) + 8 (AAL5 CPCS). This overhead is that obtained when using the LLC header option described in RFC 2684 for PPPoEoA. Compare this with a vastly more header-efficient protocol, PPP + PPPoA RFC 2364 VC-MUX over ATM+DSL, which has a mere 10-byte overhead within the ATM payload. (In fact, just simply 10 bytes = 2 bytes for PPP + zero for RFC 2364 + 8 (AAL5 CPCS).) This figure of 44 bytes AAL5 payload overhead can be reduced in two ways: (i) by choosing the RFC 2684 option of discarding the