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  2. Iribarren number - Wikipedia

    en.wikipedia.org/wiki/Iribarren_number

    The Iribarren number which is often denoted as Ir or ξ – is defined as: [5] = ⁡ /, with =, where ξ is the Iribarren number, is the angle of the seaward slope of a structure, H is the wave height, L 0 is the deep-water wavelength, T is the period and g is the gravitational acceleration.

  3. Principles and Practice of Engineering exam - Wikipedia

    en.wikipedia.org/wiki/Principles_and_Practice_of...

    The Principles and Practice of Engineering exam is the examination required for one to become a Professional Engineer (PE) in the United States. It is the second exam required, coming after the Fundamentals of Engineering exam .

  4. Break-in (mechanical run-in) - Wikipedia

    en.wikipedia.org/wiki/Break-in_(mechanical_run-in)

    Break-in or breaking in, also known as run-in or running in, is the procedure of conditioning a new piece of equipment by giving it an initial period of running, usually under light load, but sometimes under heavy load or normal load. It is generally a process of moving parts wearing against each other to produce the last small bit of size and ...

  5. Fracture - Wikipedia

    en.wikipedia.org/wiki/Fracture

    Fracture strength, also known as breaking strength, is the stress at which a specimen fails via fracture. [2] This is usually determined for a given specimen by a tensile test, which charts the stress–strain curve (see image).

  6. Engine braking - Wikipedia

    en.wikipedia.org/wiki/Engine_braking

    Engine braking is a generally accepted practice and can help save wear on friction brakes. It is even used in some motor sports to reduce the risk of the friction brakes overheating. Additionally, fuel injection engines generally do not use fuel while engine braking. This is known as deceleration fuel cut-off (DFCO).

  7. Higgs mechanism - Wikipedia

    en.wikipedia.org/wiki/Higgs_mechanism

    In the Standard Model of particle physics, the Higgs mechanism is essential to explain the generation mechanism of the property "mass" for gauge bosons.Without the Higgs mechanism, all bosons (one of the two classes of particles, the other being fermions) would be considered massless, but measurements show that the W +, W −, and Z 0 bosons actually have relatively large masses of around 80 ...

  8. Torn in Two - Wikipedia

    en.wikipedia.org/wiki/Torn_in_Two

    "Torn in Two" is a song by American rock band Breaking Benjamin. It was their second single off of their album Ember.It topped the Billboard Mainstream Rock Songs chart in September 2018, outperforming the album's first single, "Red Cold River", which peaked at number two on the chart.

  9. Process flow diagram - Wikipedia

    en.wikipedia.org/wiki/Process_flow_diagram

    A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. The PFD displays the relationship between major equipment of a plant facility and does not show minor details such as piping details and designations.