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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Best highlighter pens to supercharge your studiesThe ‘Cool and Refined’ set consists of Green, Dark Blue, Violet ... Buy now £10.50, Cult Pens STAEDTLER 264-1 Textsurfer Gel Ultra-Soft Highlighter, 3mm Line Width - Yellow (Pack of 10 ...
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