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  2. Spinning mirror system - Wikipedia

    en.wikipedia.org/wiki/Spinning_mirror_system

    We assume that the spinning mirror is centered at the origin and that its axis of rotation is the vertical y-axis, with the video projector at the nodal point P above the mirror as in top figure. We further assume that the viewpoint for which the correct perspective should be obtained is at a height h and a distance d from the y axis.

  3. Laser projector - Wikipedia

    en.wikipedia.org/wiki/Laser_projector

    A laser projector is a device that projects changing laser beams on a screen to create a moving image for entertainment or professional use. [1] It consists of a housing that contains lasers, mirrors , galvanometer scanners, and other optical components.

  4. Electrophoretic light scattering - Wikipedia

    en.wikipedia.org/wiki/Electrophoretic_light...

    Electrophoretic light scattering (also known as laser Doppler electrophoresis and phase analysis light scattering) is based on dynamic light scattering. The frequency shift or phase shift of an incident laser beam depends on the dispersed particles mobility. With dynamic light scattering, Brownian motion causes particle motion.

  5. Optical comparator - Wikipedia

    en.wikipedia.org/wiki/Optical_comparator

    The projector magnifies the profile of the specimen, and displays this on the built-in projection screen. [4] On this screen there is typically a grid that can be rotated 360 degrees so the X-Y axis of the screen can be aligned with a straight edge of the machined part to examine or measure. This projection screen displays the profile of the ...

  6. Viewing cone - Wikipedia

    en.wikipedia.org/wiki/Viewing_cone

    The viewing direction is specified by the angle of inclination, θ, measured from the surface normal of the display (blue vertical arrow) while the azimuth angle, Φ, is the angle that the projection of the viewing direction onto the surface of the display makes with the x-axis (red arrow). The projection of the viewing direction is shown here ...

  7. Doppler ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Doppler_ultrasonography

    Any sudden changes in direction of blood flow produces audible sounds on the ultrasound machine. [3] In spectral Doppler, the y-axis shows the direction and velocity of the flow. Meanwhile, the x-axis (as known as "baseline") shows the flow over time. The gradient at any point on the waveform would therefore shows the acceleration of the flow ...

  8. Laser guidance - Wikipedia

    en.wikipedia.org/wiki/Laser_guidance

    Laser guidance is used by military to guide a missile or other projectile or vehicle to a target by means of a laser beam, either beam riding guidance or semi-active laser homing (SALH). [7] With this technique, a laser is kept pointed at the target and the laser radiation bounces off the target and is scattered in all directions (this is known ...

  9. Laser Doppler velocimetry - Wikipedia

    en.wikipedia.org/wiki/Laser_Doppler_velocimetry

    Laser Doppler velocimetry, also known as laser Doppler anemometry, is the technique of using the Doppler shift in a laser beam to measure the velocity in transparent or semi-transparent fluid flows or the linear or vibratory motion of opaque, reflecting surfaces. The measurement with laser Doppler anemometry is absolute and linear with velocity ...

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