In 1661, mathematician Blaise Pascal conceived the world’s first bus service, proposing that a number of coaches should “circulate along predetermined routes in Paris at regular intervals regardless of the number of people,” and pick up passengers for a small fixed fare. The word bus is short for omnibus, which means “for everyone.” Bus was first used in this sense in the 1830s, its "everyone" meaning referencing the fact that anyone could join the coach along its route, unlike with stagecoaches, which had to be pre-booked.

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'ACME' is a term that refers to a particular thread form. All ACME screws are also lead screws but not all lead screws are ACME screws. The ACME thread standard ...

“Bus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bus. Accessed 25 Nov. 2024.

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Calculators ; Surface Feet Per Minute SFM = .262 x D x RPM. D ; Inches Per Minute CPT x Z x RPM = IPM. CPT ; Revolutions Per Minute 3.82 x SFM / D = RPM. SFM