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2. The best stair lift for 2025: Chair lifts that make ... - AOL

   www.aol.com/lifestyle/best-stair-lift-134610076.html

   With 12.2% of Americans struggling to walk or climb stairs, a stair lift can make a major difference in accessibility at home. Those who face mobility issues, such as seniors, people recovering ...

3. Does Medicare cover stair lifts? What older adults need to ...

   www.aol.com/finance/does-medicare-cover-stair...

   A stair lift can cost thousands of dollars and is not covered by traditional Medicare. ... Similarly, no Medigap supplemental plan will cover stair lifts, since they only pay the remaining costs ...

4. Elevator - Wikipedia

   en.wikipedia.org/wiki/Elevator

   An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist , although some pump hydraulic fluid to raise a cylindrical piston like a jack .

5. Doppelmayr USA - Wikipedia

   en.wikipedia.org/wiki/Doppelmayr_USA

   In 1996, Doppelmayr's European holding company purchased the ropeway department of Von Roll, a Swiss manufacturer which had been making lifts in North America since the mid-1980s. Von Roll owned Hall Ski-Lift, an American company that produced more than 400 lifts from 1960 to 1985. Doppelmayr now controlled all the spare parts sales for ...

6. Bernoulli's principle - Wikipedia

   en.wikipedia.org/wiki/Bernoulli's_principle

   Bernoulli's principle can be used to calculate the lift force on an airfoil, if the behaviour of the fluid flow in the vicinity of the foil is known. For example, if the air flowing past the top surface of an aircraft wing is moving faster than the air flowing past the bottom surface, then Bernoulli's principle implies that the pressure on the ...

7. Lift-to-drag ratio - Wikipedia

   en.wikipedia.org/wiki/Lift-to-drag_ratio

   Lift and drag are the two components of the total aerodynamic force acting on an aerofoil or aircraft.. In aerodynamics, the lift-to-drag ratio (or L/D ratio) is the lift generated by an aerodynamic body such as an aerofoil or aircraft, divided by the aerodynamic drag caused by moving through air.

8. Unknown Pleasures - Wikipedia

   en.wikipedia.org/wiki/Unknown_Pleasures

   Unknown Pleasures is the debut studio album by the English rock band Joy Division.It was released on 15 June 1979 through Factory Records. [5] The album was recorded and mixed over three successive weekends at Stockport's Strawberry Studios in April 1979, with producer Martin Hannett contributing a number of unconventional recording techniques to the group's sound.

9. Idempotent (ring theory) - Wikipedia

   en.wikipedia.org/wiki/Idempotent_(ring_theory)

   All idempotents lift modulo I if and only if every R direct summand of R/I has a projective cover as an R-module. [4] Idempotents always lift modulo nil ideals and rings for which R is I-adically complete. Lifting is most important when I = J(R), the Jacobson radical of R.