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  2. Laser accelerometer - Wikipedia

    en.wikipedia.org/wiki/Laser_accelerometer

    An accelerometer was announced that used infrared light to measure the change in distance between two micromirrors in a Fabry–Perot cavity. The proof mass is a single silicon crystal with a mass of 10–20 mg, suspended from the first mirror using flexible 1.5 μm-thick silicon nitride (Si 3 N 4) beams. The suspension allows the proof mass to ...

  3. Concurrent tandem catalysis - Wikipedia

    en.wikipedia.org/wiki/Concurrent_tandem_catalysis

    Orthogonal tandem catalysis is a "one-pot reaction in which sequential catalytic processes occur through two or more functionally distinct, and preferably non-interfering, catalytic cycles". [7] This technique has been deployed in tandem alkane-dehydrogenation-olefin-metathesis catalysis [ 8 ] [ 9 ]

  4. Piezoelectric accelerometer - Wikipedia

    en.wikipedia.org/wiki/Piezoelectric_accelerometer

    Both methods ensure that unwanted orthogonal acceleration vectors are excluded from detection. Manufacturing an accelerometer that uses piezoresistance first starts with a semiconductor layer that is attached to a handle wafer by a thick oxide layer. The semiconductor layer is then patterned to the accelerometer's geometry.

  5. Cross-coupling reaction - Wikipedia

    en.wikipedia.org/wiki/Cross-coupling_reaction

    In organic chemistry, a cross-coupling reaction is a reaction where two different fragments are joined. Cross-couplings are a subset of the more general coupling reactions. Often cross-coupling reactions require metal catalyst

  6. Lattice reduction - Wikipedia

    en.wikipedia.org/wiki/Lattice_reduction

    From the geometric definition it may be appreciated that () with equality if and only if the basis is orthogonal. If the lattice reduction problem is defined as finding the basis with the smallest possible defect, then the problem is NP-hard [citation needed].

  7. Testing forgotten rape kits could free the innocent. Here’s ...

    www.aol.com/testing-forgotten-rape-kits-could...

    A 2021 article in the New Criminal Law Review evaluated numerous studies and determined the rate is likely between 3% and 6%. ... “If there’s a chance for DNA testing and the results might ...

  8. Miller index - Wikipedia

    en.wikipedia.org/wiki/Miller_index

    In either case, one needs to choose the three lattice vectors a 1, a 2, and a 3 that define the unit cell (note that the conventional unit cell may be larger than the primitive cell of the Bravais lattice, as the examples below illustrate). Given these, the three primitive reciprocal lattice vectors are also determined (denoted b 1, b 2, and b 3).

  9. U.S. Secretary of State Antony Blinken spoke with Israeli Defense Minister Yoav Gallant on Monday and urged further actions to substantially increase humanitarian aid in Gaza, the State Department ...

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