Chaosnet was inspired by the experimental 3 Mbits/s Ethernet in use at Xerox PARC at the time. Experimental Ethernet has a 8-bit node address; Chaosnet has 16 bits, of which 8 is network and another 8 is the node. The Chaosnet data rate is 4 Mbits/s.
On top of the hardware protocol, Chaosnet also defined the higher-level transport and session layer protocol. Applications are addressed by a name string rather than a port number; e.g. "TELNET" instead of 23. This protocol was retained when the NIC hardware was replaced with stock Ethernet.
FYI, it was probably just a regular women's weightlifting barbell. They are somewhat lighter, and have a thinner grip. Maybe she's serious about her weightlifting training.
It's built into the Unix terminal driver. Control-U is the default, but it can be changed with e.g. "stty kill". Libraries like readline also support it.
Forth was invented before Moore worked at NRAO. Granted, it was gradually expanded from a very small interpreter, so it's hard to say exactly when it became "Forth" as we mean it today.
