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Best highlighter pens to supercharge your studiesA symbol of a studious individual hard at work, the humble neon highlighter pen is nevertheless often akin to an un-surreptitious sword; brightly coloured and clumsily wielded by many, often ...
To understand how this works in highlighter pens, we can compare them to ordinary ballpoint pens. When light hits the ink of a blue pen, the ink reflects blue light and absorbs other colours ...
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