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As the pigment returns to normal, so too does sight. In daylight the eye's pupil constricts, thus reducing the amount of light entering after a flash. At night, the dark-adapted pupil is wide open, so flash blindness has a greater effect and lasts longer.
The problems are not observed with electronic ballasts. [9] Ordinary people have better reading performance using high-frequency (20–60 kHz) electronic ballasts than magnetic ballasts, [ 10 ] although the effect was small except at high contrast ratio.
Although known for manufacturing their film projectors, a partnership with Canon between 1961 and 1976 offered still cameras. Many of their 35mm SLR cameras were manufactured by Canon with the Bell & Howell logo or Bell & Howell/Canon in place of the Canon branding. The firm dropped the production of movie cameras by the end of the 1970s.
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The scents of cinnamon and star anise add big flavors to this quick soup. Butter adds body and a silky texture. Fresh udon noodles take only a few minutes to cook, but dry udon noodles work well ...
Ostrovsky, et al., [11] in 2006, studied a woman who gained sight at the age of 12 when she underwent surgery for dense bilateral congenital cataracts. They report that the subject could recognize family members by sight six months after surgery, but took up to a year to recognize most household objects purely by sight.
Desoldering tools and materials include the following: Solder wick; Heat guns, also called hot air guns; Desoldering pump; Removal alloys; Removal fluxes; Heated soldering tweezers; Various picks and tweezers for tasks such as pulling at, holding, removing, and scraping components. Vacuum and pressure pumps with specialized heater tips and nozzles