With prepared and blank slides, additional accessories and a choice of lighting, the National Geographic Ultimate Dual is a great all-in-one microscope kit for young biologists and geologists. Why you ...
An engineer at Stanford University has created a DIY microscope, called the Foldscope, that is fashioned out of a single piece of printed-and-folded A4 paper, origami-style. This paper-based ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果