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The surface of this type of vibrating coating line is distributed and scattered with raised bumps. Some bumps are coated with high-refractive-index glass beads.When a speeding vehicle runs over the raised road lines, it produces a strong warning vibration to remind the car driver of deviation from the lane. [1]
Cat's eye glass body and principle of operation; back (left) face is mirror-coated The cat's eye design originated in the UK in 1934 and is today used all over the world. [ 1 ] The original form consisted of two pairs of retroreflectors set into a white rubber dome, mounted in a cast iron housing.
Later types included the Qwik-Point (1970) and the Thompson Insta-Sight. Both were beam-splitter type reflector sights that used ambient light: illuminating a green crosshair in the Insta-Sight, and a red plastic rod "light pipe" that produced a red aiming spot reticle in the Qwik-Point. [26] A view through a Tasco ProPoint red dot sight
A bicycle reflector or prism reflector is a common safety device found on the rear, front and wheels of bicycles. It uses the principle of retroreflection to alert another road user of the bicycle's presence on the road. The reflector is usually manufactured in the form of a moulded tile of transparent plastic.
The two surfaces of the reflector have different radii to correct the aberration of the spherical mirror. Light passes through the glass twice, making the overall system act like a triplet lens. [3] Mangin mirrors were used in searchlights, where they produced a nearly true parallel beam.
Starting with cars built on January 1, 1969, front seat headrests were now standard. 1969 Valiants got new rectangular side marker lamps with federally required integral reflectors. For 1970, the Valiant was carried over with detail changes, including a new black plastic grille sculptured differently from 1969's metal item.
1. Tennis Ball. Tennis balls are so useful that you may want to buy some to keep around the house even if you don’t play. For example, half a tennis ball can help screw open tight caps.
The era of the large glass-mirror reflector had begun, with telescopes such as Andrew Ainslie Common's 1879 36-inch (91 cm) and 1887 60-inch (152 cm) reflectors built at Ealing, and the first of the "modern" large glass-mirror research reflectors, 60-inch (150 cm) Mount Wilson Observatory Hale Telescope of 1908, the 100-inch (2.5 m) Mount ...