Or an LED video light. Slightly more expensive ($13), but is flat and comes with a diffuser to provide pretty uniform light, so should me much easier to use wit

Or an LED video light. Slightly more expensive ($13), but is flat and comes with a diffuser to provide pretty uniform light, so should me much easier to use with microscope slides. This one even has adjustable brightness: https://www.amazon.com/gp/aw/d/B00SWIKYIU/&qid=1474820232 https://www.amazon.com/gp/aw/d/B00SWIKYIU/&qid=1474820232