the.com/tether line
the thin rope deciding whether you float home or drift into legend.
means A line, rope, or cable that secures a person or object to a fixed point, limiting how far it can move or drift away.
from From "tether," a word of Old Norse stock — compare Old Norse "tjóðr," a rope for tying grazing animals so they couldn't wander off the pasture. English kept the farmyard sense for centuries: a tethered goat or horse could roam only as far as its rope allowed. "Line" simply names the rope itself, from Latin "linea," originally a flax thread ("linum"). So a tether line is, at root, a flaxen cord keeping a beast — or now an astronaut, a diver, a climber — from straying past its leash.
- spacewalk lifeline
- Astronauts clip on so they don't become satellites
- backup propulsion
- NASA jetpacks exist for snapped-tether disasters
- max safe length
- Too long, and you swing dangerously off-station
- underwater use
- Divers tether to surface in zero-visibility wrecks
- origin word
- From Old Norse for rope or chain
kite string tension limits — benjamin franklin's 1752 kite experiment used a wet hemp cord as tether line to conduct electricity during lightning
usaf parasail tether — u.s. air force uses 1200-foot nylon tether lines to stabilize tactical parafoil systems for cargo delivery