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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. Orbital angular momentum multiplexing - Wikipedia

    en.wikipedia.org/wiki/Orbital_angular_momentum...

    [1] OAM is one of two forms of angular momentum of light ; it is distinct from, and should not be confused with, light spin angular momentum . The latter offers only two orthogonal quantum states , corresponding to the two states of circular polarization , and can be demonstrated to be equivalent to a combination of polarization multiplexing ...

  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. Oblate spheroidal coordinates - Wikipedia

    en.wikipedia.org/wiki/Oblate_spheroidal_coordinates

    The red oblate spheroid (flattened sphere) corresponds to μ = 1, whereas the blue half-hyperboloid corresponds to ν = 45°. The azimuth φ = −60° measures the dihedral angle between the green xz half-plane and the yellow half-plane that includes the point P. The Cartesian coordinates of P are roughly (1.09, −1.89, 1.66).

  6. Bent's rule - Wikipedia

    en.wikipedia.org/wiki/Bent's_rule

    The s orbital is normalized and so the inner product s | s = 1. Also, the s orbital is orthogonal to the p i and p j orbitals, which leads to two terms in the above equaling zero. Finally, the last term is the inner product of two normalized functions that are at an angle of ω ij to each other, which gives cos ω ij by definition.

  7. Time-of-flight mass spectrometry - Wikipedia

    en.wikipedia.org/wiki/Time-of-flight_mass...

    The velocity of the charged particle after acceleration will not change since it moves in a field-free time-of-flight tube. The velocity of the particle can be determined in a time-of-flight tube since the length of the path (d) of the flight of the ion is known and the time of the flight of the ion (t) can be measured using a transient digitizer or time to digital converter.

  8. Category:Accelerometers - Wikipedia

    en.wikipedia.org/wiki/Category:Accelerometers

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  9. Toroidal coordinates - Wikipedia

    en.wikipedia.org/wiki/Toroidal_coordinates

    The black point is located at the intersection of the red, blue and yellow isosurfaces, at Cartesian coordinates roughly (0.996, −1.725, 1.911). Toroidal coordinates are a three-dimensional orthogonal coordinate system that results from rotating the two-dimensional bipolar coordinate system about the axis that separates its two foci.