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  2. Gratuity - Wikipedia

    en.wikipedia.org/wiki/Gratuity

    Leaving some change on the restaurant table is one way of giving a gratuity to the restaurant staff. A gratuity (often called a tip) is a sum of money customarily given by a customer to certain service sector workers such as hospitality for the service they have performed, in addition to the basic price of the service.

  3. Tip-speed ratio - Wikipedia

    en.wikipedia.org/wiki/Tip-speed_ratio

    The tip-speed ratio, λ, or TSR for wind turbines is the ratio between the tangential speed of the tip of a blade and the actual speed of the wind, v. The tip-speed ratio is related to efficiency, with the optimum varying with blade design. [1] Higher tip speeds result in higher noise levels and require stronger blades due to larger centrifugal ...

  4. Triisopropylsilane - Wikipedia

    en.wikipedia.org/wiki/Triisopropylsilane

    Triisopropyl silane (TIPS) is an organosilicon compound with the formula (i-Pr) 3 SiH (i-Pr = isopropyl). This colorless liquid is used as a scavenger in peptide synthesis. It can also act as a mild reducing agent. In peptide synthesis, TIPS is used as a scavenger for peptide groups

  5. The latest rules of tipping: How much to tip in 2024 - AOL

    www.aol.com/finance/latest-rules-tipping-much...

    Service. Suggested guidelines for tipping. Restaurant delivery. $5 or 20% of the meal price (whichever is greater) Grocery delivery. 15% or 20% of your order total, or more for a large order

  6. Stress intensity factor - Wikipedia

    en.wikipedia.org/wiki/Stress_intensity_factor

    Polar coordinates at the crack tip. In fracture mechanics, the stress intensity factor (K) is used to predict the stress state ("stress intensity") near the tip of a crack or notch caused by a remote load or residual stresses. [1]

  7. Advance ratio - Wikipedia

    en.wikipedia.org/wiki/Advance_ratio

    The advance ratio is the inverse of the tip speed ratio, , used in wind turbine aerodynamics: [6] μ = λ − 1 {\displaystyle \mu =\lambda ^{-1}} . In operation, propellers and rotors are generally spinning, but could be immersed in a stationary fluid.

  8. Titanium(III) phosphide - Wikipedia

    en.wikipedia.org/wiki/Titanium(III)_phosphide

    Titanium(III) phosphide (TiP) is an inorganic chemical compound of titanium and phosphorus. Normally encountered as a grey powder, [ 1 ] it is a metallic conductor with a high melting point. [ 2 ] It is not attacked by common acids or water. [ 1 ]

  9. Blade solidity - Wikipedia

    en.wikipedia.org/wiki/Blade_solidity

    is ratio of hub to tip diameter; is the specific speed; Cordier diagram can be used to determine specific speed and impeller tip diameter . Accordingly solidity ratio and hub-tip ratio (range 0.3-0.7) can be adjusted.