How to Make Fluorescein (Fluorescent Dye)

Web Reference: 总结一下，make用来执行Makefile，cmake用来执行CMakeLists.txt，qmake用来处理*.pro工程文件。 Makefile的抽象层次最低，cmake和qmake在Linux等环境下最后还是会生成一个Makefile。 cmake和qmake支持跨平台，cmake的做法是生成指定编译器的工程文件，而qmake完全自成体系。 “Fake it until you make it”这句话之所以流传很广，是因为它确实捕捉到了一种真实有效的成长路径，但理解它的关键，在于分清“假装”的对象。 它有效的那一面，本质是“行为塑造认知”。 心理学里有“具身认知”的支撑——当你刻意调整姿态、语速、表情，让自己“像那么回事”时，大脑会逐渐 ... Jul 2, 2018 · 也就是说：make sb do sth=make sb to do sth. 但英语中只说：make sb do sth. 二，make sb do sth的意思是“让某人做某事”，常包含有强迫某人做某事的意味，比如：Our boss made us do more extra job out of our duty. 当然，不一定表示强迫的意味，比如：what you said made me feel relieved.

YouTube Excerpt: In this video we show how to make fluorescein, a strongly fluorescent chemical. Combine 166 mg of phthalic anhydride, 220mg of resorcinol and 3 drops of concentrated sulfuric acid. Heat to 200 degrees celsius for 5 minutes. The crude fluorescein produced is dissolved in dilute sodium hydroxide solution (300mg in 10mL of water). To demonstrate fluorescence a few drops of the solution are dropped into water under ultraviolet light.

In this video we show how to make fluorescein, a strongly fluorescent chemical. Combine 166 mg of phthalic anhydride, 220mg of resorcinol and 3...

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