Liquid Paper Liquid Paper Liquid Paper is an American brand of the Newell Brands company marketed international that sells correction fluid, correction pens, and correction tape. Mainly used to correct typewriting in the past, correction products now mostly cover handwriting mistakes. In 1956, Bette Nesmith Graham, the mother of The Monkees' Michael Nesmith, invented the first correction fluid in her kitchen. Working as a typist, she used to make many mistakes and always strived for a way to correct them. Starting on a basis of tempera paint she mixed with a common kitchen blender, she called the outcome fluid "Mistake Out" and
Cunningham correction factor Cunningham correction factor In fluid dynamics, the Cunningham correction factor or Cunningham slip correction factor is used to account for noncontinuum effects when calculating the drag on small particles. The derivation of Stokes Law, which is used to calculate the drag force on small particles, assumes a No-slip condition which is no longer correct at high Knudsen number. The Cunningham slip correction factor allows predicting the drag force on a particle moving a fluid with Knudsen number between the continuum regime and free molecular flow. The drag coefficient calculated with standard correlations is divided by the Cunningham correction factor, C