the.com/fuel rod
a metal straw of caged starlight that stays lethal long after its shift ends
means A sealed metal tube packed with pellets of nuclear fuel (usually enriched uranium) that's bundled with others inside a reactor to sustain a controlled fission reaction and generate heat.
from A plain compound of two old workhorses. "Fuel" travels back through Old French "fouaille" to a Vulgar Latin word built on Latin "focus," meaning hearth or fireplace — so at root it's literally "stuff for the hearth." "Rod" is good solid Germanic, kin to Old English "rodd," a slender straight stick. The marriage is strictly 20th-century, born with nuclear power itself: the long, thin shape of the cladding tube made "rod" the natural word, and "fuel" did the rest — even though this hearth-stuff burns by splitting atoms rather than catching flame.
- slim build
- pencil-thin tubes stacked into bundles taller than people
- long fuse
- stays radioactive for tens of thousands of years
- underwater glow
- spent ones bask in blue Cherenkov-lit pools
- zirconium skin
- clad in metal that resists corrosion at extreme heat
- slow burn
- powers a reactor for years before being swapped
fukushima daiichi fuel rod — reactor 3 explosion in 2011 japan after tsunami, exposed zirconium cladding