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After turning 40, founder Rick Hopper started using readers and began habitually losing, scratching and dropping his glasses. [1] In 2010, Hopper made prototypes using paperclips and magnets , solving the problem he had with trying to keep his glasses safe and secure. [ 1 ]
Looking at eclipse without proper glasses is dangerous. Luckily, there are DIY options for those who forgot to order a pair in time for April 8.
In glasses with powers beyond ±4.00D, the vertex distance can affect the effective power of the glasses. [4] A shorter vertex distance can expand the field of view, but if the vertex distance is too small, the eyelashes will come into contact with the back of the lens, smudging the lens and causing annoyance for the wearer.
Pin-to-pin compatible devices share an assignment of functions to pins, but may have differing electrical characteristics (supply voltages, or oscillator frequencies) or thermal characteristics (TDPs, reflow curves, or temperature tolerances). As a result, their use in a system may require that portions of the system, such as its power delivery ...
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A refreshable braille display or braille terminal is an electro-mechanical device for displaying braille characters, usually by means of round-tipped pins raised through holes in a flat surface. Visually impaired computer users who cannot use a standard computer monitor can use it to read text output.