The phrase "an endless spiral" is correct and usable in written English.
It can be used to describe a situation or process that seems to go on indefinitely without resolution or improvement.
Example: "The debate over climate change often feels like an endless spiral, with no clear solutions in sight."
Alternatives: "a never-ending cycle" or "an infinite loop".
Larger-diameter pipes are often produced by forming the strip into an endless spiral, as shown schematically in B in the figure.
I liked to sit close to the gramophone, where I could watch the record spinning, because the grooves in the shiny shellac appeared to create an endless spiral that almost induced a trance, making visible the passage of time.
The movement is not exactly aggressive, either: Ms. Shanahan's choreography rolls across the stage like an endless spiral of subtle contractions or sweeping curves, lulling you into a dull state.
Indeed, the term "biocide" would be more appropriate than "insecticide" — all the more appropriate because the whole process of spraying poisons on the earth seems to have been caught up in an endless spiral.
Indeed, the proposed densification model almost assumes an endless spiral of growth.
Isn't an endless spiral of densification the very definition of unsustainability?
Threats metamorphosed into deadly violence in a seemingly endless spiral.
Is there a way out of the endless spiral of rising costs, rising premiums and rising numbers of uninsured?
A sneeze shatters the cartoon frame as though it were made of glass; a slide down the banisters threatens to turn into an endless downward spiral into the dark.
On one page, an assemblage of indistinct human forms climbing up an endless, wobbling spiral staircase suggests the top of the Chrysler Building (and, by extension, Sousanis's clear inspiration Scott McCloud, by way of McCloud's Chrysler-headed character Dekko); on another, Botticelli's Venus dives into a sea of crosshatched pen lines, becoming a mermaid whose hair and scales are made of text.
Does all this sound like little consolation at a time when the market seems to be caught in an endless downward spiral?
